自信的英文語錄如下：
* Success is not final, failure is not fatal: Success is to keep a going when you want to give up. (Winston Churchill, British Prime Minister)
* Courage is not the absence of fear, but the ability to act in spite of it. (Helen Keller)
* I believe I can fly.
* Believe in yourself and what you are capable of.
* Confidence is the first step on every great adventure.
* The greatest sign of success is to be able to work hard and keep going.
* The secret of success is constancy of effort.
* Success is not final, failure is not fatal: it is the courage to continue that counts. (Winston Churchill, British Prime Minister)
以上語錄都表達了自信和自我信念的重要性，鼓勵人們相信自己並勇往直前。