A few years ago Linda and I read The Ruthless Elimination of Hurry: How to Stay Emotionally Healthy and Spiritually Alive in the Chaos of the Modern World, by John Mark Comer. It's so good!
Comer has a great chapter on "Sabbath." He writes:
"Sabbath is more than just a day; it’s a way of being in the world. It’s a spirit of restfulness that comes from abiding, from living in the Father’s loving presence all week long." (p. 149)
He gives this template contrasting a life of restfulness with a life of relentlessness.