Perhaps the best way to live is to adopt a bayes model; that is, iterate on every single moment, every single day, based on the information or knowledge at hand.

For example, once you get a kid, their nap time and sleep time and routine is going to vary. Therefore as a consequence, it seems that the smart strategy is to decide and iterate based on the moment, figure out the best solution at hand, rather than trying to stick to some sort of hard set schedule.

For example exercise. Ever since moving to LA, we are landlocked. Therefore a smart strategy is to simply work out at home, in your garage parking lot, outdoors, or just going to the park or whatever is close at hand without traffic.