Maybe we can start by narrowing this down to being angry at this A-hole that you were dating that robbed you.
Then we can narrow it down to he didn't even have to be drinking to be an A-hole.
Being sh1t pissed at an A-hole is a good place to start, when you can start working on being angry with just him, might be a bit more manageable.
But I won't be able to help if I'm stuck on an Island somewhere