From Shel Silverstein, one of my all-time favorites. This always puts into perspective for me how much time I spend telling my boys "no," "don't," "stop," and how little I take opportunities to say, "YES!"
LISTEN TO THE MUSTN'TS
Listen to the MUSTN'TS, child,
Listen to the DON'TS
Listen to the SHOULDN'Ts
The IMPOSSIBILITIES, the WON'TS
Listen to the NEVER HAVES
Then listen close to me -
Anything can happen, child,
ANYTHING can be.
By Shel Silverstein Where the Sidewalk Ends