Starting a new weight loss program without first taking care of your habits is like building a new house on sand. It will not work and your weight loss will not be maintainable because your habits will always try to sabotage you and get into your way.
Your habits are literally on autopilot, and your brain uses them to always revert back if you want to leave your old paths.
That's the reason why willpower doesn't work when it comes to habit change.
What is required is habit TRANSFORMATION instead of willpower!
Make habit your friend to create new habits that support your weight loss process.