I do that, too. It's obsessive thinking for me. I'm anxious to solve life problems, but I go around in endless thinking loops, shooting down each possibility, leaving myself between a rock and a hard place, and then starting the same thinking all over again. For me, I know the solution is to simply make a decision, and let conflicting ideas go. Take them off the drawing board. But much easier said than done. When I'm able to do sitting meditation, it helps some. Meditation is tough, too, especially when in "monkey mind", my mind swinging from limb to limb.