Reading BookLife

I'm reading this book called BookLife to get an idea of what I need to be doing to support my writing career. It has a lot of great information, and then some I'm not that big of a fan of. Namely the need to a strategic plan. My plan is to write, and one day make enough dough doing it that i don't have to supplement my income with a day job. Not that I don't love my day job, because I do, but to write for a living would be a dream come true. So do I really need a strategic plan? Since my major goal is accomplished by writing. I don't have many steps to achieve that part. And the rest is luck, craft and timing, right? Has anyone read Booklife? If so, did you following his steps?