Anything that you do in sports should involve some routine. Here's a simple one for you to get a good idea of what the putt will do after you hit it.

1. Start behind the ball and look at the general landscape to see if the putt will break right to left or left to right. Walk to the mid point between the ball and the hole on the low side.
2. Scan from the ball to the hole and determine if the putt is uphill or downhill. Then walk behind the hole.
3. From behind the whole, look at the high side around the hole and study the last 4-6 feet of the putt and identify where the putt would die into the hole if it had the speed to take the ball about 12-18 inches past the hole.
4. Now, in your mind's eye, retrace the putt from the whole to the hole to your ball, then walk back to the ball, and go through the last part of your preshot routine and hit the putt.
5. With practice, this procedure should take no more than 20 seconds.