Overanalyzing is a real problem for me too. Poker is very complex, and I find myself getting "wrapped around the axle" at times, and I get very frustrated. When I do, I go back to the fundamentals and simplify the game and I do a lot better.
I think a contributor to this is all the specific poker hand reviews and spots that get discussed by poker pros and coaches. I have won a hand with 72off in the BB before, but this happens 1 in maybe 10,000 hands. I could write an article about how I played it perfectly and call it "how to win hands with complete trash". But in the end, the hand played itself and I may never win with 72off again. This to me is just an example of overanalyzing poker. Sometimes it just is what it is.
Fundamentals are key. Enjoying the game is the second key.
Good Luck and God Bless