That is a wild trick by Steve Pavlina. He suggests that you practice waking up like you do with any other skill you want to learn. During the day set the conditions as close as possible to what they are when you go to sleep at night. Set your alarm for a few minutes ahead and practice standing up when the alarm goes off. Your goal is to put your subconscious mind to work. Alarm goes off you stand up. Alarm goes off you stand up. Rinse and repeat.