根据给定的目标，推荐具有相同目标的三本好书。
目标：提高自信心
1. "The Confidence Code: The Science and Art of Self-Assurance--What Women Should Know" by Katty Kay and Claire Shipman
2. "You Are a Badass: How to Stop Doubting Your Greatness and Start Living an Awesome Life" by Jen Sincero
3. "Power of Positive Thinking" by Norman Vincent Peale