1. Focus on the shot by selecting a precise target 
2. Imagine the ball splitting the fairway 
2. Take two deep breaths to quiet your mind and reduce tension 
3. Take one practice swing to get the best tempo
5. Allow the swing to happen
I changed the order so that the golfer gets his/her mind right first, then the body, then tempo, and then just swings.
One of my favorite quotes is Sam Snead telling someone who was struggling off the tee: “Hit it with your practice swing.â€ (Meaning, of course, that the struggling golfer was swinging easy in practice and then tightening up when actually hitting the ball.