Smile and the World will smile with you.Cry and you cry alone...
There are many joys mentioned below.
But the cheapest joy apart from "Sleep" is"smile".You don't buy smile nor it costs a penny . It is just the use of your facial muscles and viola,it works wonder .
Smile at each other, smile at your wife, smile at your husband, smile at your children, smile at each other it doesn’t matter who it is and that will help you to grow up in greater love for each other. — Mother Teresa
Just Smile and feel the joy even when the roads are tough and you don't know where to go.