1. Making sure I get sun on my skin and in my eyes. Does wonders for my well-being.
2. Sleep. Better sleep = better response to whatever you eat.
In fact, I think if you eat a decent diet it really doesn't matter what exactly you eat or whether you play around with macros or fasting or whatever, if you don't at least get some sun and good sleep, the obsession with dietary tweaks isn't really going to get you very far.
After the above 2 items, I'd add doing the PB Fitness things. They really are a means toward fantastic health. I think the diet supports the fitness and the fitness supports the diet.
Female, 5'3", 50, Max squat: 202.5lbs. Max deadlift: 225 x 3.