For those of you who don't know, recent studies show that in order to develop a habit, a habit that requires dedication and determination, a habit like eating a certain diet...
It takes approximately 66 days... 66 days of complete, unwavering dedication to the task at hand. 66 days without cheating.
This means that it becomes automatic to make the correct food choices, you are less likely to cheat in the long run, and it is easier for you to stick to the way of eating for the long haul, almost for the rest of your life.
That being said, Day 66, no cheating, is a huge deal. Huge Effing Deal.
I think that reaching this point makes me happier than losing 10% of my weight.
If you would like to read about the evidence: