I don't know whats going on

I don't know. Theres times i feel very horrible, jealous and angry. Even tho im good at controlling my feelings, i have a hard time not showing my anger to somebody for no reason at all. I get jealous of people's successes and im not even a person like that. It bothers me so much. And with all of these things theres also derealization that never leaves. Please talk to me...