Could a person with perfect social skills (lets say an A+ Psychiatrist) handle a BPD/NPD relationship without much commotion?

Lets say that I am married to a Cluster B person and that she is undiagnosed.

She makes my life hell right now.

I was talking to a Psychiatrist I'm related to about it, and I told him about all the things happening in my life and that the only bad thing is my relationship with my wife.

He said that I should see a Therapist and that Therapist will help me learn some coping measures, and also will help me be a better person and whatever. And that will empower me to control my relationship with my wife better?

I am no pro on this stuff and I definitely have things I could work on. But the only thing that bothers me (and has been bothering me for a while) is my relationship with my wife. I have no other complaints, I'm healthy, I have a good career, good WLB, I know people. All dandy. I'm on my 3rd book on cluster B types and I feel defeeated because she is a High Functioning one and doesn't see anything wrong with her behavior.

She is a pathological liar, has intense mood swings, and I am constantly walking on eggshells, and cant discuss any topic with her because I know that she is ready to die on any hill, just to be pronounced a winner.

What could I possibly learn by going to therapy so that I can have a much more manageable relationship with my Cluster B wife?

If this is unclear, I'm open to delving deeper if you've got clarifying questions.

Thank you for your input.