I think about things I said in high school that were dumb, or I wish that I could do high school again and be a mature person that I (sort of) am now, on a daily basis.

I also think about people from high school and how they are doing now and I am jealous of them. At other times I resent those same people because they didn't care about me at any stage, yet I spend so much time thinking about them.

It's one of my weirder obsessions, that I don't talk about with anyone because it's embarrassing.

Sometimes I go for weeks or months without caring, but then a random thought will trigger it, and I'll be back to obsessing. In fact the initial obsession was probably triggered because I ran into someone who was from high school, a few years after high school ended. Then I became obsessed with that person.

Can anyone relate, or see a way to finally resolve this obsession?