You've got to set yourself up to be as healthy as you can. The thing we tend to do is when it gets to be a bit too hard we actually opt out for the absolute worst option. For example if you're in a rush in a morning and you feel like you don't have time to make breakfast you skip it.
In our family, if you said the words 'I feel,' they better be followed with 'hungry' or 'cold'. Because we didn't get personal, that's just how it was.