Time. It's humanity's equalizer. The great common denominator. None of us can purchase or earn more. Therefore, it deserves respect and attention. It's the most fleeting, the most costly, and often the most desired. The age old phrase of regret reinforces this idea, "If I had one more day..."
I think this is why someone not valuing my time feels so offensive. For example, if someone doesn't show to an appointment more than once (without notice), I won't pursue them as a prospect. Why? Because wasting someone's time is literally stealing life--it's killing them (one minute at a time). In fact, I would rather have someone cuss me straight out the door than not show up for a meeting.
I cherish commitment, particularly in the context of time, because there is literally no single moment we can relive or get back. Our days are numbered and our time is fleeting. The Psalmist agrees:
"Show me, LORD, my life's end and the number of my days; let me know how fleeting my life is." (Psalm 39:4)
"Teach us to realize the brevity of life, so that we may grow in wisdom."(Psalm 90:12)
I have a hard time relaxing. Days off and vacations often leave me with a void, a quiet desperation to do something that matters. Part of this, I believe, is a normal discontentment from my creative tendencies. But I believe the other part, the deeper seated issue, is that I know life is limited. My clock is ticking down to zero. I want to make the most of the assignment of time I've been given.
And in the meantime, I want to value the time of others, because I certainly don't want to inadvertently be killing anyone.