Wow, that's a really good question. I have noticed that I tend to fluctuate between 116-119. But if I go above 119, then I analyze what I've been eating, and I cut back where necessary. It's usually picking up old habits, like having dessert, or an extra snack, so I eliminate those. I still love food! It's so good, especially bad food, but I made a promise to not let myself get back to where I was.
When it comes to having the gumption of working out, I just start slow, and then my body "remembers" and I am able to get back on the wagon.