Beliefs that are limiting stop us from achieving or doing something for ourselves. Limiting beliefs may be formed from bad experiences or something we have been told as a child or reinforced during our adulthood.
To overcome a limiting belief, an enabling belief to replace the limiting belief is needed. The most simple and effective way is to play the role as if you already own the new enabling belief. Start with small parts. Do not set yourself up for failure by aiming for something big. Cutting down a quarter of your carbs and replacing it with vegetables and lean protein will create evidence of success that will spur you on.