I'm learning to take this whole weigh reduction process one day at a time. (I don't like saying "weight loss" as if it could be found again or it happens accidentally as I lose other things accidentally)
It doesn't matter whether I was successful or not yesterday. It's in the past. The better question is have I been successful today? It doesn't matter if I fell flat on my face yesterday. Did I stand strong today? It doesn't matter what might or might not happen in two weeks when I go away on a business trip and cannot really control the menu. What matters is how am I doing today? How am I doing right now?
What ifs and if only's are not at all helpful in any aspect of life including health and weight reduction. What if I go away and can't eat right . . . if only I hadn't eaten that piece of pizza. Well, I don't know what will happen when I go away and I did eat the extra piece of pizza (or whatever) so let's focus on what is true and real. What is true and real is that I am going to bed tonight having reached my exercise goal and eating goal today and that's something to celebrate! Let's take it one day at a time.