Poem for Business Inspiration

My friend Todd Herman sent me this poem the other day:
Good Enough
My friend, beware of "good enough," It isn't made of sterling stuff; It's something anyone can do; It marks the many from the few.  The flaw which may escape the eye And temporarily get by Shall weaken underneath the strain And wreck the ship, the car or plane. With "good enough," the car breaks down, And one falls short of high renown. My friend, remember and be wise, In "good enough," disaster lies. With "good enough," the failures rest And lose the one who gives the best. Who stops at "good enough" shall find Success has left them far behind. For this is true of you and your stuff-- Only the best is "good enough."
--Author Unknown
  I didn't think it was "Good Enough", so I rewrote lines 7, 8, 9, and 17. Let me know if you think I improved it. Here's my version:
Good Enough
 
My friend, beware of "good enough," It isn't made of sterling stuff; It's something anyone can do; It marks the many from the few.  The flaw which may escape the eye And temporarily get by Shall weaken underneath the stress Putting mediocre to the test. With "good enough," it all breaks down, And one falls short of high renown. My friend, remember and be wise, In "good enough," disaster lies. With "good enough," the failures rest And lose the one who gives the best. Who stops at "good enough" shall find Success has left them far behind.
For this is true and without rebuff--

Only the best is "good enough."