Golfers who struggle to break 100 typically focus on making contact with the ball instead of making a good swing or putting stroke. We call it being "ball bound."
For fear of embarrassment, the golfer puts all of his energy into the hit, but in most cases, it's not a very good hit. Often the swing stops just past impact. Good players know to swing through the ball as if it weren't there. Here are some drills to help make your swing better, which will improve the quality of your contact.