Do we need research to know that crazy diets don't work?

I was reading my Habits book AGAIN about some research that showed sustainable habit change is what works for long term weight loss.  :)  And not eating cake every day.  (ok - I wrote that last part, it is not research)

A group of researchers noted that when they studied 1600 obese people the single success factor was those that TRACKED THEIR DAILY FOOD INTAKE.  I have been an advocate of this for forever.  But, like everyone else, I forget to log or I don't write everything down.

After reading this today, I am not skipping ANY days with tracking.  100% goal.  If I eat it, I will track it.  I will track everyday.