Jack Dorsey, chairman and co-founder of Twitter Inc. in San Francisco in 2013.
Make a List
Pulling double duty as head of both Square and Twitter, Jack Dorsey became known for his 16 to 20-hour workdays. While time management is certainly key for him, he also keeps his efforts on track by looking over two lists every day. The “Do” list includes items like “Stay present,” “Stand up straight,” and “Drink only lemon water and red wine.” Meanwhile the “Don’t” list warns against avoiding eye contact, being late, and setting expectations too high.