Smile at Fear: A Retreat with Pema Chodron is a valuable book. In it, she discusses the teachings of her teacher, Chgyam Trungpa, in his book SMILE AT FEAR.
This is a helpful, but somewhat advanced and deep book that asks us to look at our fear. Gently, we examine what our fear is about and how it is related to habitual behaviors and ways of thinking. This will help us to unlock and, hopefully, release some of our responses to fear.
Pema also teaches us the Windhorse Practice, a Buddhist practice to access our own courageous self in the present moment.
This one approaches a difficult topic and needs to be considered over and over again in order to grasp its hidden treasures.