"Duh" moment

I woke up this morning feeling good. Not feeling drugged, not having to drag myself out of bed (okay, maybe a little - but it was 6:30am), and wondering why I was actually awake. Then later reading the Feingold BB someone posted about gluten making them feel depressed. DUH! I'm two days into lo-carbing again (during which I stay grain-free), no wonder I'm feeling better! I find it amazing that when I'm in the midst of brain fog I can't even recognize it. So why can't I keep going with my diet? You'd think that would be motivation enough! Sigh.