history: I'm on a diet but I ate burger king for lunch I feel so  ashamed I cheated. I suppose to be on a committed diet but I kind of cheated today. Well_comma_ I can understand that. It's very hard to be on a very strict diet_comma_ without a break here and now!
current: It is my coworkers said they was going to Burger King and I couldn't resist I feel so bad and guilty.
next: Well, i am sure you are disappointed, but all you can do now is just get back on the diet again and try to be more dedicated. It's hard, I know!