Read about an old psychology test that Stanford did in the 60's and 70's. It was called the Marshmallow Test and it was all about the need for instant gratification affects how successful a person is in life.
You can read the full details on this Wikipedia page, but I'll explain it real quick.
So basically they brought a bunch of kids into a room by themselves and put a marshmallow (or cookie or pretzel, depending on what the kid liked - which was good to hear because I've never really liked marshmallows so I didn't think that would have been...
