Earlier this summer I decided to give up white bread (and white pastas, rice, etc) as well as meat (for all the obvious reasons). I can honestly say it was probably one of the best decision I've ever made. Right up there with quitting smoking. Without even trying I've lost a lot of weight and in general I have much more energy. My weekday routine is:

Breakfast:
1 Hardboiled egg
Tall glass OJ
Coffee

Lunch:
Hummus (From "Hummus Place" in nyc, which is ******** heaven)

Dinner:
Something big but healthy. Salad, whole wheat pasta.

Check out this vid as well.
http://www.youtube.com/watch?v=5YkNkscBEp0
Bittman's cookbook, "How to Cook Everything Vegetarian" is a must for some simple, healthy stuff.