Please help

I just can’t stop thinking how bad my family treated me while I’m studying. If I m busy in doing other things I don’t overthink that much but whenever I’m studying these thoughts are always at the back of my mind and I don’t even realize how much time has been wasted. I run away from studies and can’t really focus. This has been there for more than a year. I try listening to music etc while studying but don’t really find it interesting and still just can’t stop thinking. Everything I do, comes in front of me reminds me of how my family treated me and left me unheard. So I just keep talking to myself about it.

Please I need help how can I find peace? And just forget about all that I had to go through even it was not my mistake and how I suffered as a result.
How do I make myself feel that things can go wrong people can treat you bad even if I’m not wrong bcz I just keep on thinking that maybe I did something wrong that’s why I had to go through all this.