Guard

This randomly came to me today when I was talking to a bunch of friends,

Guard well your spare moments. They are like uncut diamonds. Discard them and their value will never be known. Improve them and they will become the brightest gems in a useful life.

And I was reminded of Proverbs 4:23,

"Above all else, guard your heart, for it is the wellspring of life."

This is probably something most of us forget most of the time.