You over analyze every bump and dip on the surface of the green and become confused about the break.
You want to work on how you visualize your line on the putting green.
The ball pops off of the face of the putter or you see too much backspin.
You need to improve on putting accuracy.
The ball seems to roll much faster than you it should based on your stroke length and power but you cannot pinpoint the reason why.
You are having a hard time putting straight along your line or have the yips.
You have a lot of leg or knee movement while putting and make poor contact because of it.
You need to work on distance control with your long putts.
You pendulum putt a lot off of the toe and heel of your putter.
You always overshoot your long putts when you have a downhill lie.