For Pamela Peeke, MD, MPH, assistant professor of medicine at the University of Maryland, the antidote for diet burnout is menu creativity.
"When you think you're going to hurt someone if you see one more asparagus spear, it's time to shake it on up," says Peeke, the medical advisor for Discovery Health Channel's National Body Challenge.
Instead of spending mental energy beating yourself up over your lack of motivation, put that energy into thinking differently about your diet.
"Experiment with different foods," Peeke suggests. "Don't get stuck in the rut of the same foods over and over again." Try a fruit or vegetable you've never had, or prepare a favorite food in a new way.
But if a peanut butter sandwich for lunch every day works for you, that's fine, says Peeke. Choose dinnertime or weekends to be adventuresome.