Work on your swing until you can do no wrong. Go to a driving range and buy several large buckets of balls. Swing until you have a nice, consistent swing grooved. Now play out all the holes at your favorite course. Simulate the holes just like cwdusheke said. Now groove your swing some more, until your have blisters on your poor little paws. If you are an experienced golfer, swing until your rip some callusus open or something.
Then do it again the next day.
And the next day.
Cuz that's what it takes.