Going through some old blogs of mine from 2009, I updated one with some new links I found that I think might be of interest. Take a tip from some 4 year olds.
The man who created the test: Walter Mischel.
One of the new links listed is a New Yorker article about the man. He was a smoker. Don't think I knew that when I posted this back in 2009.
And for further illumination about instant gratification and how to beat it: Dan Ariely's Ted Talk.
Just passing stuff forward.... The delayed gratification in this case is the day you stop craving. And it DOES happen. Believe it!
You cannot educate yourself too much about this addiction.