Don't Worry, Be Happy! :)

...
In every life we have some trouble
But when you worry you make it double
Don't worry, be happy.
Don't worry, be happy now.
...
*(Look at me -- I'm happy.
Don't worry, be happy.
Here I give you my phone number.
When you worry, call me, I make you happy.
Don't worry, be happy.)
...
Don't worry, be happy.
'Cause when you worry your face will frown
And that will bring everybody down
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Put a smile on your face. Don't bring everybody down.
Don't worry. It will soon pass, whatever it is.

Bobby McFerrin - "Don't Worry, Be Happy"