Do not try to help or hit the ball when putting, use this drill to learn how to allow the weigt and inertia of the putter head to transfer energy to the ball
Do not put pressure on yourself as you approach the final few holes and have a chance to break a personal milestone, take each hole on the course as a separate game and try to win that hole, then move on to the next one disregarding your previous scores
When playing a par three bring the club you think you should hit and then one club on either side of it, then walk off the exact distance from the distance market to the tee so that you can select the right club paying attention to the depth of the green