Sometimes i have uncontrolled thoughts about people who i think may have done me wrong are i think don’t like me. I try to let it go by saying easy things like I’m better than them or I don’t like them either. In reality some times these people may not even have anything against me (it’s just what i think they think of me in my head which i believe). 

Is this some form of anxiety? because it has affected me and given thousands of uncontrolled thoughts that reoccur about certain people (things, past incidents, etc.) that do not allow for me to be present all the time.

And if yes, what are some ways to try and fix these thoughts?