You vowed not to, but you’ve done it. You’ve eaten a doughnut. You think, “There goes my diet! I can’t ever control myself around food. I’ll never lose weight! Where’s the pizza?”
You’re engaging in all-or-nothing thinking, which is the tendency to look at things in extreme, black-and-white terms. If your behavior or a situation isn’t perfect, you tend to think of it as a complete failure, which can undermine your efforts to change or improve it in the future.
