"To get to the end the very end
let it all go let it go"
And: "You know very well yet seem not to know
speechless like a dunce or a fool
you keep still while storms flatten mountains
not a thought moving for ten thousand years
with ears you hear the wind in the trees
with no-mind you respond like a pond to the moon
but don't think you alone understand
this is something anyone can do"
This is the heart of Zen and of meditation in all traditions—and is found too, I think, hidden in "think not about what you will eat or what you will wear: look at the birds in the air and the flowers in the field."