I agree with a lot of other posters here that boredom leads to overthinking. Sometimes I think thoughts and they scare me because they are violent or sad or mean or depressing. And then that in turn leads me to feel guilty for having such thoughts. But I think that I just have an incredibly overactive imagination and a tendency to believe whatever thought pops into my head at the time, and then obsess over it. And convince myself I am a bad person for it. And the cycle goes...

I am trying very hard to tell myself that when I get any sort of negative thought, to just stop it, tell myself I am being ridiculous, and go do something productive, no matter what it is. I might go and just Windex the coffee tables right now. Just because. I know sitting here and thinking these things isn't helping. Sometimes you know that the state you're in is not helping you progress, but it's disheartening to know that even after trying you still can come back to the same place. But I guess it doesn't mean you should give up trying.