1. Drink more water.
2. Buy more apples.
3. Get a postage scale.
4. Try not to forget to eat lunch.
5. Care less about dumb stuff.
6. Care more about important stuff.
7. Don’t spend three months nurturing a tiny bit of subconscious anxiety about that redeye flight I just booked.
8. Plug good work by friends and strangers at every opportunity.
9. Always say please and thank you.

Number 5 is probably the toughest.