Anger at these situations is typical - anger is something that informs us when we're being mistreated, and from what you've written, you were mistreated. Kids can be especially cruel so you're far from alone in gaining an unfounded reputation and suffering as a result of it. But i'm assuming you're an adult now and needing to make better choices that come from a healthier place. Professional input can help with this but i would also encourage you to try and help yourself. You're a different person now, one with other options - and i would imagine a lot of empathy. That's a rare and very positive skill no? You've left these people behind physically but need help letting go emotionally. It's not impossible. You can do it