Life Without Bread is an excellent book. I've been low-carb for around eight months and went thru the "low-carb flu", it wasn't fun but it was worth it.
I kinda fell off the wagon the last month or so and hopped back on, the flu hit again today thanks to my evil ways (pizza and wine), so I'm learning that you need to stick to it, no going back and forth, choose one or the other. Live and learn.