Don Whitney has a new website and a revised book.
Biblical Spirituality is his new blog. He has revised and expanded his classic work, Spiritual Disciplines for the Christian Life. There are books you must read, and there are books you must read because they change your life. Don's book falls into the second category. I have read this book multiple times, as well as using it in my Adult Bible Fellowship class.
Don has distilled gems of wisdom into a unique collection of bulletin inserts.