Somehow this has never been true for me. Sure it's hard to start, that goes without saying. But it takes me only a week of being sick or too busy to stick to my regular routine to get completely out of shape, unmotivated, and start eating crap.
Hmm that reminds me, I need to order a pair of boxing gloves so I can start going to boxing classes. I like the idea of visualising my fears and beating the living snot out of them by laying into a punching bag. That's seriously Badass with a capital B.