Shortly before Dallas Willard died from cancer in 2013, Pastor John Ortberg asked him, "Do you regret anything?" Willard answered, "I regret the time I have wasted." A stunned Ortberg wrote:

If there is any human being on the planet who has not wasted time, it is Dallas Willard. I don't think he'd know what a television was if it hit him on the head. He is either reading or teaching or doing ministry. Or doing bits of carpentry around [his house], or mentoring students, or praying. If he's guilty of wasting time, the rest of us may as well sign up for vagrancy hell right now.

Ortberg explained what he thinks Willard meant by that one regret:

"Redeem the time," the apostle Paul wrote, "because the days are evil." I think Dallas regretted all the time he wasted, no because he compared himself to other more efficient people, but because he began to see what life could be. I remember him saying that all of us lost souls allow ourselves to live in worry and anger and self-importance and pettiness when life with God is all around us.