http://www.funtoosh.com/funpages/why_worry.php

Read it a long way back... still makes me smile a little!

Reminds me of a war-themed poem of the same theme:

If you're well, don't worry.
If you are not well, are you seriously wounded?
If not, don't worry.
If so, are you near help?
If so, don't worry.
If not, is it life threatening?
If not, don't worry.
If it is, are you dead?
If not, don't worry.
If so, you can't worry.

A soldier never worries.