Thanks everybody.
I pretty much follow most of what's being said here. Stick with mostly unprocessed foods, eat a protein breakfast (with coffee of course ) , have a B complex vitamin and D for the winter, and try to exercise at least 3x a week.
I'm relatively healthy -- don't get sick a lot, no major health issues. But I've never been a high energy person either. For instance, I've always had to have at least 8 hours minimum of sleep. My life has had its share of difficult times, but I think that being a good mom and a good grad school student at the same time will be the hardest thing I've attempted yet.
Thanks for reinforcing what I already know. If there's no magic "smart pill" out there, here's to coffee, avocados, and I suppose some more exercise.