以下是自信的英文名言：
1. Have faith in yourself, for success lies within yourself. (Anonymous)
2. I can because I think I can. (James Johnson)
3. Self-belief is the first secret of success. (Anonymous)
4. Success is not final, failure is not fatal: It is the courage to continue that counts. (Winston Churchill)
5. Confidence is the key to success. (Anonymous)
6. Believe in yourself and your abilities, and you will succeed. (William Arthur Ward)
7. The greatest glory in living lies not in never falling, but in rising every time we fall. (Nelson Mandela)
8. Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful. (Albert Einstein)
希望這些英文名言能夠對你有所幫助！