As soon as I read this I wanted to post it, something must have reasonated.
"The serious problems in life... are never fully solved. If ever they should appear to be so it is a sure sign that something has been lost. The meaning and purpose of a problem seem to lie not in its solution but in our working at it incessantly. This alone preserves us from stultification and petrification."
Jung, 1931, The Stages of Life