Dealing with Obsessive Thoughts

So this is really just a question for anyone whose found themselves suffering from incredibly intrusive and obsessive thoughts. How do you all deal with them?

Background for me - I find myself with this problem whenever approaching new people - particularly ones that I'm interested in. Its like they won't leave my head. I find myself replaying conversations in my head, a voice in my head telling me to go out of my way to talk to them even when its unnecessary, waking up in the middle of the night in a cold sweat because of stupid thoughts like "they didn't say hi to me today" when its literally only because we didn't cross paths. So I gotta admit the last few ones are things that happen when i'm talking to girls I'm interested in. However, the replaying conversations happens constantly no matter who I'm talking to. All these things have been preventing me from really staying in the present and enjoying hats going on in my life.

Do you guys have any suggestion on how to deal with this or any books/resources you can direct me too. I'm going to a new school in the fall and really don't want to deal with this issue again. Thanks in advance

 

Yea, it is. I forgot about that word. lol. But in all seriousness thanks for the link. I'm gonna check it out.