Stop throwing your arms at the ball and start rotating into the ball for more power with the Sure Set. (Grab yours here: Sure Set Training Aid.)
Take your set up position. Take your swing to the top of the backswing. NOW, instead of throwing your arms, ROTATE your lower body. Feel the pressure on the inside of your trailing foot into the ground as you rotate. Your upper body is automatically going to follow and you’ve put yourself into a very powerful position at impact.
This is going to help you store all that power you’ve created in your backswing right until impact where it’s most effective.