How do I stop getting so angry?

I feel like I’ve always taken everything too seriously. Lazy group members, bullies, obnoxious co-workers, etc.

Whenever someone brings up an old bad memory I just get so mad and all the things that made me heated in the moment come back.

People say forgive and forget, but I just can’t seem to do it. Whatever happened impacted me and I can’t forget.

I just want to know how to take everything so seriously and stop getting so angry. It’s gotten to the point where my friends and family are afraid of talking to me because they don’t know what to say to me.

People tell me to “get over it”. And that makes me mad too. It makes me feel like everything that’s happened is my fault. That nobody is taking my side because I’m taking it too serious, hence I’m in the wrong because I’m taking it too serious.

How can I stop taking everything so serious and getting worked up?