Slack line

It is not slack at all, the line,
but clearly it gives way
when you step on it, which is fine
when you stand firm, not sway.

Your sense of balance is at stake,
no easy feat of skill,
but for your own sweet ego’s sake
you show courage and will.

The calmer you begin to walk
the steadier the line,
and when you concentrate, not talk,
your progress makes you shine.