At every level of golf, putting is the great equalizer. At the pro level, everyone can hit a fairway and a green, but those who putt the best, win tournaments.
At the amateur level, no matter your athletic ability, if you putt better than an athletically gifted athlete, you still have an opportunity to win. Putting well requires proper information and practice.
There are 4 variables in putting. If you can eliminate 3 of them, all you have to worry about is reading the green: