The core idea: Decision fatigue isn't about the difficulty of any single choice — it's about volume. Every time you weigh options and imagine consequences, you burn through a limited daily supply of mental energy. The fix isn't willpower; it's reducing how often you have to choose at all.
1. Let habits absorb the small stuff
Routines aren't boring — they're efficient. Once an action becomes automatic (your commute, your morning routine, what you wear), it stops costing you mental energy. That freed-up capacity can go toward actual thinking. The move here is to notice which parts of your day repeat often enough to turn into a fixed routine, and just automate them, without worrying that you're missing out on novelty or spontaneity.
2. Match your effort to the stakes
Not every decision deserves your full analytical power. Borrowing from psychologist Herb Simon's idea of "satisficing," the advice is: for low-stakes choices (like lunch), pick something good enough and move on. Save deep deliberation for the decisions where getting it wrong actually matters — an important client deliverable, say. Over-investing in trivial choices quietly drains the energy you need for the ones that count.
3. Train people instead of deciding for them
If you're fielding constant decisions from your team, that might be a delegation problem, not a workload problem. Rather than staying the bottleneck, teach others your decision-making criteria and supervise until you trust their judgment. It costs more time upfront, but it pays off twice: you get your bandwidth back, and you build people capable of making good calls without you.
The throughline: protect your energy by cutting the number of decisions you make, not by trying to make each one faster or willing yourself through fatigue.