How to Handle a Narcissist Without Losing Your Mind (or Your Confidence)
You have probably already Googled this.
The fact that you are here tells me something is going on. Maybe it is a colleague who takes credit for your work and then plays the victim when called on it. Maybe it is a manager who runs hot and cold and somehow always leaves you feeling like you said the wrong thing. Maybe it is closer to home, a family member, a partner, someone whose behaviour you have been excusing for years because you could not quite name what was wrong.
Whatever the situation, here is what I know: dealing with a narcissist is genuinely one of the most exhausting and disorienting experiences a person can go through. It chips away at your confidence in ways that are hard to explain to people who have not been through it themselves. And it does not get better on its own.
In this post I want to give you something more useful than a list of narcissist traits you have read ten times already. I want to explain what is actually happening in these interactions, why it affects your confidence the way it does, and what you can practically do to start handling it differently.
This is the kind of conversation I have with clients in my coaching work across Ireland every week. And the shift that happens when people truly understand this dynamic is genuinely one of the most powerful things I see.

What does narcissistic behaviour actually look like?
Before we get into how to handle it, let us be clear about what we are dealing with. The word narcissist gets used loosely these days, and that is worth acknowledging. Not every difficult person is a narcissist. Not every selfish act or frustrating colleague qualifies.
But there is a pattern of behaviour, sometimes diagnosed as narcissistic personality disorder and sometimes simply a deeply ingrained way of operating, that is very specific in how it plays out. And if you have experienced it, you will recognise it immediately.
The core of narcissistic behaviour is this: the person has an excessive and fragile need to be seen as superior, special, or right. Not just occasionally. Consistently and compulsively. And they will distort reality, rewrite history, manipulate the emotions of those around them, and undermine anyone who threatens that self-image, in order to maintain it.
In practice it can look like:
Charm and warmth when you are useful to them, coldness or contempt when you are not.
Taking credit for shared successes and assigning blame for failures to others.
A complete inability to genuinely apologise or admit fault.
Constantly shifting the goalposts so you are always slightly off target.
Undermining your confidence subtly, in ways that are hard to pin down or prove.
And perhaps most tellingly: a pattern of making you feel like you are the problem, even when you know, somewhere inside, that you are not.

Why it destroys your confidence, and why that is not your fault
Here is something I want to say clearly, because I have seen how much people blame themselves for this.
Losing your confidence around a narcissist is not a sign of weakness. It is a sign that the tactics being used against you are working as designed.
Narcissistic behaviour is fundamentally destabilising. It is built to keep you off-balance, because an off-balance person is easier to control. When you constantly question your own memory, your own judgement, your own worth, you become dependent on the narcissist to tell you what is real. And they are very willing to fill that role.
Over time, this wears people down in ways that go far beyond the immediate relationship. I have worked with highly capable professionals in Ireland, people running teams, running businesses, people with genuine talent and strong track records, who had been so thoroughly undermined by a narcissist in their life that they had stopped trusting their own instincts entirely. They second-guessed every decision. They over-explained everything. They had learned to make themselves small.
If that is you, or something close to you, I want you to know that it is not permanent. But it does require naming it for what it is. And it requires a different approach than the one most people instinctively try.

What does not work, and why people keep trying it anyway
Most people who are dealing with a narcissist have already spent significant energy trying to fix the situation through normal, reasonable means. They have tried being more understanding. More patient. More accommodating. They have had calm conversations where they explained their feelings clearly, and walked away confused about how it got turned around on them.
They have tried being better, doing more, proving their worth. And it has not worked. Because it cannot work.
Here is the difficult truth: you cannot reason a narcissist out of a position they did not reason themselves into. The behaviour is not a misunderstanding. It is not a communication problem that can be resolved with enough empathy and the right words. It is a deeply entrenched pattern that serves a psychological function for them. And the more effort you put into trying to fix it through normal relational means, the more you exhaust yourself and the more leverage you inadvertently hand over.
Understanding this is not about giving up. It is about stopping the approach that is costing you the most and is never going to deliver what you need.

What actually works: how to handle a narcissist
Let me give you practical steps here, because that is what this post is for.
- Stop trying to get them to understand your perspective
I know this is hard, especially if you are someone who values honesty and open communication. But lengthy conversations in which you try to help a narcissist understand how their behaviour has affected you are, almost without exception, a waste of your energy. They do not land. Or they get twisted. Or they become ammunition.
This does not mean you say nothing ever. It means you stop investing in the hope that the right conversation will finally make the difference. It will not. Adjust your expectations accordingly and protect your energy.
- Stay factual and brief in your communication
When you do have to communicate with this person, especially in a workplace context, keep it short, factual, and unemotional wherever possible. Remove the emotional content that can be used against you. Stick to what happened, what you need, and what the next step is. The less personal material you offer, the less there is to distort or weaponise.
This takes practice, because the natural human instinct is to explain yourself, to justify, to be understood. Resist that instinct in this context. Brevity and clarity are your friends.
- Document everything, quietly
Particularly in a workplace situation, keep a record. Not obsessively, but consistently. Emails, instructions, feedback, anything that could later be rewritten or denied. This is not about preparing for war. It is about giving yourself a reliable reference point in your own mind, and protecting yourself practically if things escalate.
A narcissist depends on your uncertainty about what actually happened. Remove the uncertainty.
- Stop explaining yourself so much
One of the most common patterns I see in people dealing with narcissistic behaviour is over-justification. They feel, correctly, that they are being unfairly judged or misrepresented, and they respond by explaining themselves at length. The problem is that over-explaining signals insecurity, and a narcissist will use that signal.
You are allowed to say something once, clearly, and leave it there. You do not need their agreement to know that you are right. You do not need them to understand in order to hold your position. The more comfortable you become with that truth, the less power they have.
- Rebuild your confidence deliberately, outside of this relationship
This is the piece that most people miss. When someone has been systematically undermining your confidence, you need to actively rebuild it, not just survive the situation.
That means spending time with people who affirm and challenge you in healthy ways. It means putting yourself in situations where you can experience your own competence clearly. It means working, possibly with a coach, on separating the version of yourself that has been shaped by this person from the version that existed before them, or that can exist beyond them.
Confidence coaching in this context is not about positive affirmations. It is about rebuilding a real, grounded sense of who you are and what you are capable of, independently of what this person has led you to believe.
- Get support and use it
I have said this in every post in this series and I will say it again because it is that important. Dealing with a narcissist alone is extremely difficult. Not because you are not strong enough, but because the nature of the dynamic is designed to isolate you, to make you feel like you are the only one who sees it, or worse, like you are imagining it.
Talking to someone outside the situation, whether that is a trusted friend, a therapist, or a coach, is one of the most powerful things you can do. It restores your reference point. It confirms your perception. It helps you see what has been happening with clarity instead of the fog that prolonged exposure to this dynamic tends to create.

A word on the workplace specifically
Dealing with a narcissist in the workplace in Ireland, or anywhere, carries an extra layer of complexity because the power dynamics are real and the consequences of getting it wrong can affect your career and livelihood.
My honest advice in a workplace context is this. Do not try to expose them publicly or rally colleagues against them. It rarely works the way you hope, and a narcissist is usually far better at managing their image than you might expect. Focus on protecting yourself, documenting clearly, maintaining your professionalism, and building relationships with people outside this person's influence.
And if it is severe enough that it is affecting your mental health, do not wait until you are at rock bottom before you take action, whether that means speaking to HR, seeking legal advice, or beginning to look at your options. Your wellbeing is not worth sacrificing for a situation that is not going to change.
You are not the problem
I want to finish with the thing I say most often to people who have been through this.
The fact that you are reading this post, looking for ways to understand and handle what is happening, tells me that you are a thoughtful, self-aware person who wants to do things right. Those are exactly the qualities a narcissist exploits. It is not a character flaw. It is not a weakness. It is what made you a target in the first place.
But those same qualities, channelled in the right direction with the right support, are also exactly what will get you through this.
You can come out the other side of this with your confidence not just intact, but stronger than it was before. I have seen it happen more times than I can count. And it starts with understanding clearly what you are dealing with.

Ready to go deeper on this?
I created a masterclass specifically for people dealing with narcissists and bullies, in their personal lives, in their workplaces, or both. It covers what is actually happening in these interactions, why it affects you the way it does, and how to respond with clarity and confidence rather than confusion and self-doubt.
If you have been going around in circles trying to figure out how to handle this situation, this is the place to start.
→ How to Deal with Narcissists & Bullies, Mark's Masterclass
Or if you would like to work with me directly on rebuilding your confidence and navigating this situation, I offer one-to-one coaching and executive coaching for exactly these kinds of challenges. You can get in touch through my contact page.
→ Work with Mark, Coaching & Contact
And for honest, practical content on resilience, confidence, and dealing with difficult people, delivered to your inbox every two weeks, sign up for my free newsletter at markfennell.ie.