Two steps forward and two steps back. . . .

I get so frustrated that I make progress for a few days and then revert right back to bad habits. And I have no one to blame but myself. I am trying to focus on small lifestyle changes-but then a busy schedule, work, or lack of good food choices at home are my excuses to fall of the bandwagon so to speak. With a new dog, I am doing better about exercising more regularly. But it is not to the intensity that I am used to. I really like the gym and w/o childcare cost this upcoming year (w/ all three boys in school all day), it is more affordable. But my consistency is seriously lacking-so do I want to spend money on something I may or may not use. I just wish I would be more consistent w/the positive changes and minimize my negatives.