Visualize how good the workout is going to be. By visualizing the workout you will be preparing yourself for a great workout. You will know in your mind that the workout will turn out the way you intended it. You are re-creating the workout as it will be. Great athletes use this technique to score that goal or hit that homerun.
Visualization is a learned skill.
The more you practice it the better you will get at it. Visualization will develop your confidence in executing exercises to their fullest potential. Visualize in detail. Bruce Jenner, winner of the 1976 Olympic decathlon, believes that his daily rehearsal of each event contributed substantially to his ultimate victory.