For those of you that hit the ball to high, you might have the ball positioned correctly in your stance, but you might be setting up with too much weight on your back foot. When you do that you have a tendency for the handle to move backwards, adding loft to the shot. What you would like to have happen is that you would like to have your weight more evenly balanced. If you do this, when you set up the handle of the club will be even or in front of the ball, thereby producing that lower trajectory. A real good exercise to help you get the sensation of having the right weight distribution throughout the swing is a drill called left foot, right toe. What I would like you to do is to tee a ball up and take a shorter iron, then stand on your left foot and place your right foot on its toe behind you so that you have no way to hold your balance with your back foot. Once in this position, the only way you can hit the ball is by keeping your weight on your left foot. Then just hit shot to get the feeling of being more over the ball at address and impact rather than too far behind it. As you can see when I take a swing, I am more over the ball, allowing my hands to be much further forward at impact, driving the ball on a lower trajectory.