Some examples. The minute someone "crosses" me (or I feel they have, even if they haven't) I completely remove myself from the relationship. That doesn't work too well for jobs, romance, or friendship. I can become extremely aggressive when someone who I feel should be paying attention to me, doesn't (typically, a bored bank teller). I have strong road rage. I never make myself vulnerable, never say what I really think or how I really feel.
In general I consider that I deserve everything, and should be on top of the world. Since I'm a nobody, the space between what is and what should be is incredibly hard to bear. I hate everyone but the person I hate the most is me.
It's easy to identify what needs to change, but very difficult to act upon a specific behavior in the heat of the action.