I agree with Open Eyes, therapy can be a good place to start. You can't change your past no matter how much you regret it. The only thing to do is to learn your lesson and move on. Look, none of us was born perfect and hindsight is always 20/20. But being in the moment, it is often difficult to see things clearly. I am sure you did not do anything with malicious intent, and you would have behaved differently had you realised what you were doing wrong. Now that you have done some self-introspection you are in an amazing position to turn your life around. Be the man you want to be. Connect with your family and friends. I am sure you had some friends from school or the neighbourhood. See if you can find them on social media. Take small steps to improve your life.