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1. Say "Good morning" to a person standing next to you in the elevator.

2. Pay the toll for the driver behind you.

3. Take a minute to direct someone who is lost, even though you're rushing.

4. Write a letter to a child who could use some extra attention. Kids love getting mail.

5. Offer to pick up groceries for an elderly neighbor, especially in extreme weather.

6. Give a homeless person your doggie bag.

7. Say "I love you" to someone you love.

8. Put a coin in an expired meter.

9. Help a mother carry her baby stroller up the subway stairs, or hold a door open for her.

10. Each time you get a new item of clothing, give away something old.

11. Take someone's shift as the car-pool parent.

12. Bring your assistant coffee.

13. Out of the blue, send flowers to a friend.

14. Say "please" and "thank you"—and really mean it.

15. When you're on a crowded train or bus, offer your seat to an elderly, disabled or pregnant person.

20 more easy ways to brighten the world around you