Possible Duplicate:
Why to use “May” before using “May God bless you”?

I'm amused by the song "I hope you dance" from Lee Ann Womack, but I'm not sure if I understand the meaning of the following verse:
"I hope you never lose your sense of wonder
You get your fill to eat but always keep that hunger
May you never take one single breath for granted"

It would be much appreciated if anybody helps me to understand the meaning.