Variations on back it up

  I

When you get to a place and can’t go forward, back it up

When you get to a point with poor choices, back it up

If the choices were only the easy way or not the

Road less traveled, back it up

If the choices were the only same old

“But we’ve done it that way”, back it up

If the choices were not fully explained

Or fully thought out, back it up

If the choices were only between a rock

And a harder place, back it up

That is if the prior choices put you in a place

Where you could back it up

  II

If the choices were between the lesser of multiple evils,

Accept the challenge and suck it up

If the learning is hard and bruising,

Absorb the lesson, suck it up

If the trials or either long or short

Take all of the lesson, suck it up

If the road is curvy, lots of switchbacks

Guess what, slow down, suck it up

If you leave something behind

Forget about it, suck it up

If the page lies blank, face it squarely

Trust the words will come, suck it up

So Sherlock, this doesn’t sound like advice on 

aging boldfully, where did suck it up come from