my best period of (chosen) dietary control was a couple of years back, and for a good 6 months it looked like:

1. 2 hard boiled eggs + 1 avocado
2. aka miso soup + grilled salmon
3. boiled vegetables (corn, peas, potato, carrots)

this was enabled by the fact that I'd just been forced into moving back to livign with my mum and working in a factory. the month of jail time that preceded this was also pretty interesting. but alas..