Flagging but still trying to be motivated

Why does it happen that after just over a month of being motivated and having some successful weight loss, of eating right and exercising, that I have the overwhelming urge to say to hell with and go out for a big cheese burger and sit on the couch all day? I know that it is probably just the day. Lack of sleep and a cranky child doesn't put mom in the most focused of mind spaces. I have managed to eat well today but I am still fighting the urge to eat bad things. I know that I eat when I am stressed or bored. I have been keeping busy with prep for next year and lots of time on the floor with the kid so I'm not bored. But what do I have to be stressed about? I don't have work stress. Home life is pretty status quo so I can't even blame that. Oh, for a little drama to blame life's little hick-ups on:) I know, I know... careful what you wish for. I think that I just need to get out of the funk and find a better space in my head. I should focus on being down another pound this week instead of dwelling on the fact that it's only one pound and not three like a few weeks ago. I logically know that weigh-loss should slow down after the initial period but it still stinks. However I will take my pound this week and smile about it:)