Is this more related to being raised in Polish culture, or a medical psychiatric disorder?
I think the two go hand in hand:D Just kidding;)
When people stopped talking and caring about me, I fell into a severe depression and started doing harmful things
You need to keep it together. Hopefully these days are all in the past.
Certain traits can run in a family, they are our primary role-models after all. If you've studied Psychology then you won't be any stranger to the whole 'nature v nurture' debate.
Rather than looking outwards for a solution I think you need to look inwards. You won't find your answers in some guy, or from any amount of attention, negative or otherwise.
You need to think about what you really want to do with your life, what makes you happy. Then run with that...