It's OK to Cry: A Let’s Talk picture book to help children talk about their feelings

Mood Bears: Understanding Me (Activity book to help children understand their emotions)

What Are You Feeling? : A picture book of your emotions

Mood Bears: What is this Feeling? (Story book to help children understand their emotions)

Billy Learns About Anxiety: Children's Picture Book about Understanding and Overcoming Worries, Fear, Anxiety and Panic (Dealing with Feelings & Emotions - Picture Books for Kids)