The days where I could walk a lot, I have insanely high energy. The days in which I must drive a lot, I get extremely tired?
Theory; something about sitting is bad for your physiology, it makes you more tired?
Also, being indoors, not being able to get in the direct sun outdoors. Being indoors makes you more tired.
Assuming you want to use your life as a very interesting experiment, then perhaps a life in which you never have to drive is the ultimate ideal?
Or another words, living in the downtown, city area, in which you could walk everywhere. It is a wise idea and investment to spend the extra bucks on the higher rent.
Also as an economic theory; even if you live somewhere which has higher rent, and it is more expensive, perhaps you as a self-employed sole proprietor will actually make more money, net positive, because walking more will be superior for your health, ideation, and entrepreneurial vigor.