Commencement Advice for Another Lost Piece of the Puzzle

Go get 'em, kid. It's a big mess,
A big pile of look-alike shapes,
And it's hard to notice one gone,
But at least you know you're unique.

Hang on to that. It's your best bet.
You don't need to reshape yourself,
And you'd never fit anyway.
Trust old Polonius this once.

Know yourself, be true to yourself, 
And accept that being yourself
Is limiting, won't always work,
Won't always land you where you'd like,

And can't possibly allow you
To be both on the cutting edge
And at home in the mystery
That hides the pattern of the whole.

Oh, and one last thought. The puzzle
Has nothing to do with pieces.
We disappear on completion,
Nothing lost, nothing left over.