One of the most common mistakes people make in putting is putting ‘To the Ball’ and not ‘Through’ to the target. And, the most common reason people do that is Tension. Getting too tense will almost certainly retard your stroke and take away your rhythm. Although there are some great putters who ‘stabbed’ their putts, or as Tom Watson did ‘popped’ it, the majority of great putters all had fluid strokes extending energy towards the hole.
A great way to practice putting ‘Through’ the ball towards the target is by practicing putting one handed – preferably with your dominant hand (ie., the right hand for the majority of golfers). Not only will you be forced to putt through to the hole, but you’ll automatically become more focused on the line and target.