I suppose this could be anyone toxic, for me it is specific people (PIL, cliche?!)
I have distanced myself from them as best I can, but keep finding myself dwelling on certain things they've said or done, and lies they've told and replaying them in my head.
I am a bit of an 'over thinker' anyway, but I really want to try and stop dwelling on these things and focus on more positive things.
Has anyone done anything similar? Especially when the toxic people are still involved in your life, so on going issues and problems can occur.