Everyone has setbacks. What differentiates the successful from the unsuccessful is how the handle setbacks. You can either learn from your misstakes and avoid doing them in the future or you can give up and definitely fail..
Thomas Edison is often quoted with the following:
“I haven’t failed, I’ve found 10,000 ways that don’t work”
Don’t beat yourself up for eating unhealthy or you’ll risk getting into a downward spiral eating even more unhealthy. Instead, take a moment and think about why you had a setback and what you can do to avoid it.