The Dr Jekyll and Mr Hyde method,
5am: Get up early and relax, make a nice healthy breakfest and enjoy a cup of tea. Grab your lunch (made the night before, of course), and head off to work. Enjoy fruits, salad, yogurt and nuts throughout the day and head back home in the evening
6pm: Upon arriving home, turn off all consciousness and raid the cabinets, looking for something to give you a nice jolt of energy. Cookies, cheese, crackers ... keep looking and keep eating until you feel physically uncomfortable. Fade to black.
8pm: Wake up on the kitchen floor in a pile of (now) crushed saltines, and reflect on the 20 minutes of madness that completely counterbalanced all the well-planned, healthy eating that had taken place during the day. Vow that tomorrow will be different.
Repeat ad infititum.