Listmania!
Self-improvement library
By an Amazon.com customer
Optimal Thinking: How to Be Your Best SelfOptimal Thinking: How to Be Your Best Self by Rosalene Glickman
Buy new: $9.85 / Used from: $0.01
My favorite of all, this book really makes you examine your thought patterns and alter them to best help yourself
The 7 Habits of Highly Effective PeopleThe 7 Habits of Highly Effective People by Stephen R. Covey
Buy new: $8.22 / Used from: $2.96
This book is maybe more about success than self-confidence but it's nonetheless very interesting
Self-Help Stuff That WorksSelf-Help Stuff That Works by Adam Khan
Buy new: $25.00 / Used from: $9.97
The title says it all. This book really works.
Self-Esteem: A Proven Program of Cognitive Techniques for Assessing, Improving, and Maintaining Your Self-EsteemSelf-Esteem: A Proven Program of Cognitive Techniques for Assessing, Improving, and Maintaining Your Self-Esteem by Matthew McKay PhD
Buy new: $11.77 / Used from: $3.72
Very uplifting material here
Health Secrets from ChinaHealth Secrets from China by Bryan Feldman
An all-around approach to mental and physical health
Self Improvement: The Top 101 Experts Who Help Us Improve Our LivesSelf Improvement: The Top 101 Experts Who Help Us Improve Our Lives by David Riklan
Buy new: $18.28 / Used from: $0.01
This is the place to start if you want to learn more and do your own research