I was looking at this photo the other day and Monty Python popped in my head:

If life seems jolly rotten
There’s something you’ve forgotten
And that’s to laugh and smile and dance and sing.
When you’re feeling in the dumps
Don’t be silly chumps
Just purse your lips and whistle – that’s the thing.

And…always look on the bright side of life…
Always look on the light side of life…