Narcissists have an over-inflated sense of self and expect people to adore and admire them. When you ask that they alter their behavior, they perceive it as an injury to their ego, and then will punish you for any type of request.
In many cases, a Narcissistic Abuse affects your identity and mental health on a very deep level for several years. In these cases healing from this type of trauma could become a very difficult and long process...
...but we don't want that.
So, if your narcissist partner won't change, the only one that can do it are you.
And you have to do it as quickly as possible. You have to react to this abuse.
A guide like "Narcissistic Ex How to Break Free from Mind Manipulation, Recover from Abuse, and Put an End to Toxic Relationships with a Narcissist Person. Develop Empath for Others by Improving Your Social Skills" by Christian Silverman can really help you to find a solution to this problem.
Here's a little preview of what you're going to learn:
how to handle people with Narcissistic personalities
how to deal with different types of Narcissists relationships (familial relationship, professional relationship, romantic relationship and platonic relationship)
why you keep coming back to your Narcissistic partner
how to co-parent with a Narcissist
why are some people fruitful sources of Narcissistic supply and why they attract themselves
...and much, much more.