Kindness is a behavior marked by ethical characteristics, a pleasant disposition, and a concern for others. It is known as a virtue, and is recognized as a value in many cultures and religions. Wikipedia
One small, thoughtful gesture can make someone else's day...
Say "Good morning" to a person.
Even just smiling at all times
Take a minute to direct someone who is lost, even though you're on a rush
Offer to pick up groceries for an elderly neighbor, especially in extreme weather.
Give a homeless person your doggie bag.
Say "I love you" to someone you love.
Each time you get a new item of clothing, give away something old.
Out of the blue, send flowers to a friend.
Say "please" and "thank you"—and really mean it.
When you're on a crowded train or bus, offer your seat to an elderly, disabled or pregnant person.
I believe if we all can do at least one of these everyday, the world would become a better place one day at a time.