If you are not dieting...

If you are not dieting, you cannot "break your diet." 

If you are not dieting, there is not wagon to fall from.

If you are not dieting, there is no cheating.

If you are not dieting, there are not forbidden foods.

If you are not dieting, there is no getting back to normal eating.

Stop dieting. Learn instead to make better, healthier choices.  When you find yourself in a pattern of choosing poorly, reassess and choose again.  Learn from your body. Learn from your circumstances. Begin to ask yourself why you choose to eat the way that you do.  With practice, you can learn to make the Better Choice.