Also, for this having made it, money-wise, being able to afford a great cook, having a personal trainer who reminds you of your goals, being tempted less because you never visit a supermarket, etc. all help.
Having trainers, dieticians, etc. professionals around you to help with everything probably makes it easier in the sense that you probably save one or two hours of planning and organizing your life per week, and probably your programming is a bit more optimized, but it's hardly a game changer. If you are somewhat devoted to the topic, you can learn and do all the same stuff yourself.