1. Compliment someone's outfit (and really mean it).
2. If you see someone running for the subway, hold the door open for them.
3. Buy the person behind you their coffee.
4. Leave a sweet post-it note on your co-workers desk.
5. Call your mom unexpectedly.
6. Smile instead of frown as you walk around.
7. Start a conversation with your cab driver.
8. Leave your newspaper for the the next person.
9. Put the cap back on the toothpaste.
10. Empty the dishwasher before your roommate gets home.
11. Leave an extra good tip for your waiter.
12. Help a mom carry her stroller up the subway stairs.
13. Bring a flower when you go to meet up with your friend.
14. Free guac day at Chipotle.
15. Venmo your friend a few bucks, just because.