The older I get, the more I think my primary foe is fatigue.
I’m just tired a lot. Four kids and a business require lots of energy. The most common thing I fight against is feeling tired. Mentally and physically.
This makes bursts of energy really valuable. I’ve learned to ride the highs to productive stuff as much as possible. If I wake up at 4:30am for no explainable reason and don’t feel tired, ride it. If I have a late night burst, or mid-morning weekend surge, ride it. Whenever, for however long it lasts.
Sleep is more valuable than ever, and so is total focus and energy. So I try to squeeze the most out of both.