Do

1. Stay present: don’t focus on the past or the future.
2. Be vulnerable: show people your mistakes and fears so that they can relate
3. Drink only lemon water and red wine
4. Six sets of 20 squats and push-ups every day, run for 3 miles, meditate on this list, stand up straight, spend 10 minutes with a heavy bag
5. Say hello to everyone
6. Get 7 hours of sleep

Don’t

1. Don’t avoid eye contact
2. Don’t be late
3. Don’t set expectations and not meet them
4. Don’t eat sugar
5. Don’t drink hard liquor or beer during the weekday

Jack Dorsey Square co-founder and Twitter chairman