Dr. Brené Brown’s entire collection. Her work focuses on how to live a whole-hearted life and developing resiliency in responding to difficult emotions. She also has a podcast called Unlocking Us, which is excellent.
http://brenebrown.com

"The Relationship Cure: A 5 Step Guide to Strengthening Your Marriage, Family, and Friendships", by John Gottman and Joan DeClaire
While I recommend all of Dr. Gottman’s books, I particularly recommend this book as it addresses relationships across the spectrum. It is an easy read with practical advice and tips, allowing you to become intentional about improving your relationships.

"The Dance of Anger: A Woman's Guide to Changing the Patterns of Intimate Relationships", by Dr. Harriet Lerner

Dr. Lener's books are excellent, easy to read, and filled with real-life examples. This book is one of the best I have read on anger and on learning more about anger and how to work towards managing it differently in relationships. It has excellent reflection questions that can help you explore your anger and teaches you how to set healthier boundaries. I also strongly recommend her book "The Dance of Connection: How to Talk to Someone When You're Mad, Hurt, Scared, Frustrated, Insulted, Betrayed, or Desperate" as a companion read (or stand alone)! 

"Burnout: The Secret to Unlocking the Stress Cycle" by Emily Nagoski & Amelia Nagoski

This book is excellent on focusing on what is unique to the burnout among women and gives practical, science based ways to learn to complete your stress cycle and begin to address what lead to burnout in the first place. 

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"The Mindful Path to Self-Compassion: Freeing Yourself from Destructive Thoughts and Emotions", by Christopher Germer
In addition to Dr. Kristin Neff’s work (see website below), Dr. Germer’s book provides excellent exercises and tips for cultivating self-compassion and mindfulness. Self-compassion is central to healthy living and wholeness.