All change requires effort and sacrifice. Sometimes action plans fail because they are based on the idea that there is a 'magic bullet' which on its own can solve our problems.This is not true. Complex human problems typically require complex solutions with many different components.
When I was a kid I used to hate getting picked for team sports. It would be the fit and sporty guys over there. And me and the fat kids over here. Those kids were fat! One girl had to be cut out a hula hoop.