When I think of things people put me through in the past, I get upset all over again and take it out on everyone. I'll be mad for nothing at all and have a attitude with everyone for no reason.
How can I stop overthinking and getting upset easily?
It sounds like you have had difficulty in processing what happened to you in the past and because of that difficulty in moving past what happened to you, when you are reminded of what happened you get angry all over again. Please know that it IS possible to remember what happened but to also not have the same emotional response. It is very common to have difficulty processing a traumatic situation that occurred in the past. Many people go through this. A good therapy designed to assist with this type of issue is EMDR. Try to find a therapist who is trained in EMDR to help you with processing these memories so that you dont have the same emotional response every time you think about what happened. Best of luck to you!