I know a lot about nutrition - the best food choices, the most missed nutrients, how often one should eat, how to read a nutrition label, how to ignore the silliest of nutrition claims, how much protein an athlete should eat, how many calories the average American eats, and which foods we should all eat less of.

Despite knowing all of this, I can't stop eating Pop Tarts for breakfast.

I rationalize this poor, high-sugar, low-nutrition breakfast choice (the obsession is really only 2 weeks old, at this point) by telling myself that I'm pretty awesome to my body otherwise - I don't smoke, I workout, I take showers, I don't drink that much, and I dress it well. So what's the harm in a few happy moments with a Pop Tart in the a.m.?

I have two theories:

1) If eating the Pop Tart in the a.m. is what makes me have a better (and otherwise healthier) day, then by all means, the Pop Tart is not doing me all that much harm.
2) If I can rationalize a Pop Tart being an OK breakfast choice, then I can pretty much come up with an excuse for anything. And I hate people that come up with excuses for everything.

What should I do?