Fifteen famous quotes about confidence are as follows:

1. Confidence is more important than genius. ——Greek philosopher Aristotle.

2. Confidence is the preservative of the soul. ——American writer Henry David Thoreau.

3. People with confidence can turn the small into the great and the mediocre into the magical. ——British writer Bernard Shaw.

4. Confidence is the first secret to success. ——American inventor Edison.

5. Confidence is the first step towards success. ——American writer Einstein.

6. Confidence can move mountains. ——Spanish writer Cervantes.

7. Confidence is more important than ability. ——French writer Zola.

8. Confidence is the soul of virtue. ——German philosopher Immanuel Kant.

9. Without confidence, you will be listless. ——French writer Bulwer Lytton.

10. Faith can help people get out of darkness. ——American writer Emerson.

11. Confidence is the number one secret to success. ——U.S. President John F. Kennedy.

12. If a person has firm confidence, he can do anything. ——Ancient Greek writer Sophocles.

13. Self-confidence is more precious than gold. ——Soviet writer Gorky.

14. Confidence is the cornerstone of success. ——Ancient Greek philosopher Plato.

15. Without confidence, you will achieve nothing; with confidence, you will be able to do anything. ——Ancient Greek playwright Sophocles.

The ways to improve confidence are as follows:

1. Set clear goals: Set clear, specific, measurable goals and ensure that these goals are achievable. When you achieve these goals, you will feel the joy of success, which will help improve your self-confidence.

2. Start with small steps: For some seemingly unattainable goals, you can start with small steps. For example, if you want to start a new business, you can start by learning relevant skills and then gradually expand the scope of your business. In this way, you can gradually build confidence.

3. Accept the challenge: Challenge yourself to try new things, or try some activities you have never tried before. This will help you discover your potential and improve your self-confidence. Record achievements: Record your achievements, whether they are big or small. When you look back on these accomplishments, you'll feel proud and satisfied, which will help boost your self-confidence.

4. Seek support: Talk to friends, family, or professionals to share your thoughts and feelings. They can provide support and encouragement and help you build confidence. Develop a positive mindset: Think positively about your abilities and potential. When you encounter setbacks, don't give up easily, but believe that you can overcome difficulties.