Well stress is supposed to increase cortisol which is supposed to contribute to belly fat storage so destressing is something to work on.
Also, I have just started a CLA supplement, it's supposed to help with belly fat, not so much to lose weight but help balance it somewhat, besides there's lots of benefits to CLA consumption. You might read up on that and see about supplementing it. In animal studies, there seemed to be a marked difference. Just a thought.
But seriously, be kind to yourself. Many people struggle when thrown off their normal routine, it's doesn't have to mean you revert back to your old ways, it can be a learning experience.