World-changing advice: Be your own best friend. Love yourself unconditionally.
All of these books about how to love yourself are good, in different ways. They take varying approaches. You might like to browse through and see if anything calls to you.
Grow Yourself a Life You’ll Love, by Barbara Garro
Learning to Love Yourself: A Guide to Becoming Centered, by Gay Hendricks
Empowering You to Love Yourself, by Suzanne E. Harrill
How to Love Yourself When You Don’t Know How, by Jacqui Bishop
Love Skills for Personal and Global Transformation: Secrets of a Love Master, by Dr. Scott Peck and Shannon Peck