How do you work on obsessions and compulsions when it’s not dangerous to others but it scares them?

Basically the title. I’m posting a passage I wrote earlier that’s happened more than once. I know I won’t do anything to harm someone else but I have intrusive thoughts that are persistent o that person who wrongs me, fixation on that person for quite some time (never goes away but subsides with time), compulsions of planning another encounter with them and I call it a ritual behavior of gathering information about them caused by my obsessive and intrusive thoughts. I’ve never acted on them TO the person but I’d like to hear perspective if anyone else dealt with this how you overcame it what you did.

“I know someone has been wrong but it’s been better One wrong move one wrong saying there I am wanting to wait for you where we last met. Calling your husband’s phone I find your number and I want to call it just to confirm you’re the bitch I interacted with today. I hope you have patterns so we can meet again next week same time. Will you remember me? Doesn’t matter if you don’t show. I know where you go for extracurriculars and WHO you spoke with. I have many photos and one by one I’ll tick them off until I have a name to a face. Really all I need is to match your voice when you spoke you spoke to me like a dog ass bitch. At least I know a few things about you and look at that we have something in common. Did you say those things because you’re a government employee? Did you say those things because of my race? Or did you say those things because I’m young? Either way, I hope to see you next week. "