"I was an executive director at a US investment bank. One bad MD destroyed my career"

I am not working nor have I worked for the past two years. This situation is not my own doing. A managing director wilfully destroyed my 15 year banking career. 

I spent over a decade working for the same leading US investment bank in the US. I was not in a front office role but the sort of support position that means you get moved around. I was moved often and I was ok with that. I am a very change-oriented person. I had 13 managers in 15 years because managers would compete to have me on th