If you are practicing and start hitting bad shots then step away from the ball and work on re-establishing solid contact with a few bump shots in order to get the feel for center clubface hits
One reason for Jack Nicklaus' greatness can be traced to the meticulous nature of his set up routine when he picked and focused on his intermediate target
On tough shots don't let tension and pressure ruin your frame of mind, create a line of commitment away from the ball where you do your work before you swing