Oh Doctor....

You will come to a place where the streets are not marked.
Some windows are lighted, but mostly they're darked.
A place you could sprain both you elbow and chin!
Do you dare to stay out? Do you dare to go in?
How much can you lose? How much can you win?

And IF you go in, should you turn left or right...
Or right-and-three-quarters? Or, maybe, not quite?
Or go around back and sneak in from behind?
Simple it's not, I'm afraid you will find,
For a mind-maker-upper to make up his mind.

...for people just waiting.
Waiting for a train to go, or a bus to come,
Or a plane to go. Or the mail to come, or the rain to go.
Or the phone to ring, or the snow to snow.
Or waiting around for a Yes or a No,
Or waiting for their hair to grow.
Everyone is just waiting.