Rest

Better 10% undertrained than 1% overtrained. As with anything, better to work less hours, than work a ton, burn out, get divorced, and have a heart attack in your 50s. 

Life is a long term thing. It's not about a given three month period. It is not about some metric you can push higher today with a demanding extra hour of work. For me, life is about relationships. That includes the relationship I have with myself. I know, I can push myself over the healthy limit. In a way it is satisfying. Yet, ultimately it can be harmful if used inappropriately. So I rest.

Rest is not given the respect it deserves. Sometimes I sleep ten hours on a work night. We can't burn the candle at both ends, we might run out. This lesson of resting more, or as I like to think of it, 'resting hard', is something that I have learned in the last few years and I am very happy I have. I go to sleep around 9 PM most nights. That is about the earliest of anyone I know. Often I sleep until 6 AM. Our bodies and our minds, regardless of the job or hobby, work best when we have had rest.