I have been travelling to teach so it's been a few days since I have trained. Making the right food choices while I am on the road, at the airport eating out etc is what keeps me in check. The secret is to ALWAYS have healthy food handy. I never head off to an airport without my hard boiled eggs and a banana. While I am on the road I will grab a salad and a KIND bar with no added sugar.
When eating out I make sure to have a salad of some fish and vegetables. Easy of the dressings and sauces and I stop eating when I am feeling full.