Be careful of over thinking or over playing your putts. Years ago, I think it was Leadbetter, that had a putting tape and in it he demonstrated just how well our brain calculates things. He used a baseball and a set of car keys as an example. He had his partner move around away from him any where from 10 to 30 feet while tossing first the ball, then the keys at different distances. Neither one of them over threw or for that matter under threw the other. His point was that your brain and eyes and arm muscles all work very well together and you can make that throw nearly perfect with little or no thought. The putter can be the same way in a sense that the calculations are already made, just trust your self. Try setting a bunch of balls on the practice green at different distances and angles and just hit them all towards the hole as quickly as you can. Don't read or take practice strokes just hit them. I would be willing to bet that some of them actually go in. Confidence!