The only way to be happy in life
is to sort out problems with care,
erasing all worries from the mind
and avoiding a dismal nightmare.

If similar problems occur in life
the answers will be there - no despair!
and if an error or two we happen to make
We will learn from each little mistake.

Joyce Hemsley

http://www.poemhunter.com/poem/we-learn-from-our-mistakes-2/