Try to recreate pressure situations when you're practicing (June 2007)
With Ed Grant
For example, make yourself hit five 10-foot putts before you can go home. Make yourself drive three balls within the yard markers before you leave the driving range. Make yourself chip five balls within five feet of the hole. Make yourself hit bunker shots within so many feet of the hole.
Now that may not sound like a lot of pressure, but if you tell yourself that you've got to hit ten 5-footers before you can go home, by the time you get to number 8 and number 9, there going to be some pressure there. If it's 6:15 and you told your wife you'd be home at 6:00 there's really some pressure. So recreate pressure situations and you'll learn to deal more effectively with nervousness.