Good video in the thread above. Notice how the lead arm remains straight. For me, this is what I need to remind myself to do in order to hit solid short shots. FOR ME, when I'm playing well, I try not to think of much in the stroke when hitting short pitches and chips. I remind myself to keep a straight lead arm (without the reminder I tend to bend the arm just enough to distroy any chance of hitting the ball solidly) and then think about the flight I want and EXACTLY where I want the ball to land. Like putting, I try not to think about length of swing and followthrough. I've hit enough balls to let my sub-conscience take over. If I was tossing the ball, I would not think about my tossing technique, wrist position, followthrough.... Same idea here.
When I get hippy around the green, no amount of thinking will help. It is hard, but I try to just think about the lead arm and hope that does it.
Not sure if that will help you.