Numerous studies have shown that the very few who both reduce and maintain a significantly lowered bodyweight are more likely to:
Eat a consistent, less varied diet.
Watch less TV and other entertainment.
Keep track of what they’re eating.
Weigh themselves regularly.
In other words they embrace the quotidian and self-tracking, the “monitored monk” lifestyle. They are aware of and well-calibrated to both internal and external processes, relatively to others at least if not absolutely.