First of all I want to say you are not alone in this. I think its safe to say that everyone has times where we over work things. I know Ive done it in the past. Something I do when I start to stress out or overthink things is recognize what I am thinking about, then I decide if what i am thinking about is really a big deal or if it isnt. If it is, I do the best I can to fix whatever the issue is in the best, and sensible way possible. If its not a big deal and I realize it, I dont worry about it anymore. Try doing that and if you keep having problems in the future feel free to respond and keep me updated.
Love you friendo