Effort is important: "Old man and a hammer"

I receive the email from our cycling buddies which represent a good example about ones experiences, below quotes:

> A giant ship engine failed. The ship's owners tried one expert after
> another, but none of them could figure but how to fix the
>
engine.
>
> Then they brought in an old man who had been fixing
ships since
> he was a
> young. He carried a large bag of tools
with him, and when he
> arrived, he
> immediately went to work. He
inspected the engine very
> carefully, top to
> bottom.
>
> Two of the ship's owners were there, watching this man, hoping
>
he would know
> what to do. After looking things over, the old man
reached into
> his bag and
> pulled out a small hammer. He gently
tapped something.
> Instantly, the engine
> lurched into life. He
carefully put his hammer away. The engine
> was fixed!
>
>
A week later, the owners received a bill from the old man for
> ten
thousand
> dollars.
>
> "What?!" the owners exclaimed. "He
hardly did anything!"
>
> So they wrote the old man a note saying,
"Please send us an
> itemized bill."
>
> The man sent a
bill that read:
>
> Tapping with a hammer...... ......... ........
$ 2.00
> Knowing where to tap.......... ......... ...... $ 9, 998.00
>
> Effort is important, but knowing where to make an effort makes
> all the
> difference!