Serious answer: If your goal is that important to you, it's really a personal issue you will need to work out with yourself and your wife. I think that no book will be able to uniquely address your personal relationship.
Additionally, I am not certain that it is necessary to "eat junk food, sit at the PC all day, sleep on the couch" in order to build a business or change the world. Although it is romantic and might be doable for some people over the course of months and years, sacrificing (subjective) quality of life and sanity should not be the only path to building something meaningful that you care about. It will probably take a lot over work over the long haul. If the console cowboy lifestyle changes are the aspects of creating something that you/your wife are worried about, maybe address those separately from the goal of actually creating something, which I hope would not necessitate those behaviors.
Additionally, I am not certain that it is necessary to "eat junk food, sit at the PC all day, sleep on the couch" in order to build a business or change the world. Although it is romantic and might be doable for some people over the course of months and years, sacrificing (subjective) quality of life and sanity should not be the only path to building something meaningful that you care about. It will probably take a lot over work over the long haul. If the console cowboy lifestyle changes are the aspects of creating something that you/your wife are worried about, maybe address those separately from the goal of actually creating something, which I hope would not necessitate those behaviors.