Healthy eating is all about motivation, balance, and flexibility.
But it's very important that you don't get down on yourself and abandon your new healthy lifestyle when this happens. You feel as if all your hard work has been for nothing. Oh well, I might as well enjoy this weekend and start over on Monday. This kind of scenario is a perfect example of the diet mentality at work. A properly designed program makes sense, but expecting to stick to a structured eating and exercise plan for an extended period of time without ever deviating makes no sense at all.