how to handle a problematic previous advisor? Luckily I got in academia after having a serious conflict with my previous advisor.  The problem was that he gave my dissertation proposal to his previous student (another his previous student said that he loved her a lot).  She even got $100,000 NSF grant with the proposal. 

I said it was unfair.  Then he did his best to kick me out of the school (he even called the police for the reason I was shown up in his office; contacted all people to say that I am not qualified for a Ph.D. and so should be kicked out).

A school dean saved me and so I graduated. However, for the conflict, I couldn't get in my field (I am in totally different field); still I need to take medicine to get in a sleep, to meet people and to control my anger. 

Anyway, I'd like to go back to my own field again because it is too tough to struggle in a new field.  Any advise?  Also I'd really like to pay all back to him regarding what he did to me.  What could be the best way?   

Anyway, he is a full professor in a well-known research school; also he is a big name and so about 30% of faculties in this field are his previous students &amp; 50% of senior faculties are his good friends.
Get on with your life. Best way to get revenge would be for you to become successful and renowned in your field despite conflict with previous advisor.