I'm finishing up Bonnie Thurston's To Everything a Season: A Spirituality of Time. Excellent work, though she's weak on inspiration of Scripture and other points.

Thurston is Professor of NT at the Pittsburg Theological Seminary and an ordained minister of the Christian Church (Disciples of Christ). So that gives you an idea of where she comes from. But aside from some sticky points, the book will give you a moment to reasses your life and use of time.