history: I recently noticed how much weight I gained over the past year and I just feel like I really let myself down. Over the past year_comma_ I gained a ton of weight and never realized until it was too late. I feel like I really let myself down. I always said I'd never let myself go. Hey_comma_ It's never too late. Unless you can't exercise at all there is always a way to start. 
current: Yeah, I guess you're right. I need to stop pouting about it and get in the gym. I'm definitely going to have to keep an eye on my calories now.
next: Don't worry about the calories for now. Just start moving more, and maybe join an exercise class. You'll start to enjoy it, and before you know it the weight will just start dropping off!