If you think of being able to lose weight and keep the weight off permanently as a set of skills, then in order to develop your skills, like in any other endeavor, you need to practice.
Deliberate practice, as the research studies call it, is something all people do when they are trying to learn and develop a set of skills, any set of skills. You did it when you learned to read and write. You even did it as an infant and toddler when you learned to walk and talk. You practiced over and over again. Experts in all walks of life practice and practice long and hard and that’s what makes them experts.
With weight loss, you don’t have to be an expert, but you do have to be good enough. Even ‘good enough’ requires practice. Think about it: cooking, planting, talking to your kids. It takes practice and lots of it if you want to be good enough. What makes you think losing your unwanted weight is any different? How do you become able to lose weight and keep the weight off permanently? Just like you get to Carnegie Hall. Practice, practice, practice.