Tiger Woods has spent a lifetime refinig this ability. Your action plan should reflect a strong emphasis on discovering ways to experience and reinforce true awareness. By tuning into your swing you are effectively tuning out distractions that have a negative impact on your game. Belief and confidence in yourself is the direct result of materialising an action plan and developing the skills of awareness, similar to Tiger Woods. To doubt your club handling capabilities is effectively saying you do not trust yourself.
Uncertainty creates tension and a lack of concentration, which leads to frustration.
The way to improve your consistency is to reduce these destructive elements with a methodical approach. Most of us can only dream of matching Tiger Woods.