Jack Nicklaus once said that he never hit a shot even in practise unless he had a vivid image of the ball flight he wanted to hit and where he wanted it to finish. I have to say that I have done this for many years now also and it certainly helps.
Pre - shot routine
Try 3 imaginary boxes behind the ball.
1. Think box - collect all the vital information required for the shot in hand. Wind, distance, intermediate target and any other critical information you think you need. Culminating in choosing the correct club from the bag.
2. Feel Box - Make a practise swing or two feeling the shot in hand.
3. Play box - Focus on one thing only and play the shot.