LIFEFOCUS One small change of direction is barely noticeable in the short run. But once we've gone far enough, we find we're on a completely new course! It's called the vector principle. Jerry Foster shows readers how to put that principle to work in their lives, helping them to make small changes that can improve their relationships with people and with God, and balance their financial, physical, and intellectual pursuits. Foster's life work is about helping people make changes. Here's the book to show them how.