From the folks who brought you The Mindfulness and Acceptance Workbook for Anxiety, take a look at Your Life on Purpose. Described by one Amazon reviewer this way:
The book invites you on a voyage of rediscovery of your life values. Along the way, you will learn to navigate potential values conflict and to identify which of three kinds of barriers — thoughts, emotions or perfectible skills — might hold you back. Gentle and evocative exercises will help you overcome those obstacles and get moving. I particularly liked the exercises that let you experience what living life in accordance to your most deeply held values might feel and look like — a profoundly motivating experience.