Getting Jay Kidwell's book is a solid, good idea.
I once had tp so bad that while checking my draw length in my basement, I automatically released the arrow into a cement wall as I approached full draw; surprised the hell out of me. I found by facing something I would never shoot at (outside, I wasn't taking any chances after the basement incident),I was able to hold at full draw and feel in control. I would do this several times before taking a shot at my target. I faced the tree just to the left of my target and would draw, hold, and let down. After a few times I took a shot or two at the target. TP would slowly return as I shot. When this happened, I would, again immediately turn towards the tree and go through my draw, hold, and let down routine.I reduced my TP over time. For me, a strong deep hook kept me in better control over when my release happened. I can occasionaly feel the shot about to happen before I am set. This usually happens at the same time I feel some momentary creep and a reduction in draw length. Keep at it.
Don't let the frustration get you down. Shooting is too much fun. Good luck and don't:banghead: