Use creative visualization: hold a picture of what you want in your mind and act as if you already have it.

One of my friends lost twenty pounds this way by visualizing himself twenty pounds thinner each night before he went to sleep.

I myself went on a trip to Europe when I was seventeen by announcing I was going about six months before I wanted to go, and then continuing to tell everyone I was going as if it were an accomplished fact. It took six months, but it worked.

You have to be careful with this, though.  One time my friend Gary really wanted a gold Rolex watch, so he used creative visualization to convince himself he already had the gold Rolex. He was a Hollywood guy, and one day he was on a plane with a movie star who was giving away Rolex watches to his friends, and Gary said, “No thanks, I already have one.”