Do fine until three o'clock. Then you get bored or tired so you cave to something good so you can get through the rest of the day.
Eat dinner but go back for seconds knowing you shouldn't.
Grab chips every time work gets stressful.
Say "sure" to the free donuts your boss brought in so you don't seem rude.
Hit the drive-thru on the way home because you're too tired to even think.
End every night eating a bunch of junk once everyone goes to bed.
And maybe it's the weekends. Without structure or being busy you find yourself eating and swearing to do better on Monday.
Every time you blow your diet you feel defeated. You keep thinking, "I don't know why I keep doing this to myself."