"如果你不相信自己，没有人会为你做这件事。"

Simplified Meaning:

Believing in yourself means having confidence in your own abilities and trust that you can achieve what you set your mind to. Imagine a student who wants to win a race. If the student doesn't think they can win, they might not train hard or put in the effort needed. Other people, like coaches or friends, can offer support, but they can't make the student believe in their own potential. This confidence must come from within. In history, take Thomas Edison, the inventor of the light bulb. He failed many times before finally succeeding, but he never gave up because he believed in his idea and in his ability to make it work. If he had doubted himself and stopped trying, we might not have the electric light bulb today. The advice here is to cultivate self-belief. Set small goals, accomplish them, and build your confidence step-by-step. When you believe in yourself, it not only motivates you to keep going, but it also influences how others see you. People are more likely to support and trust those who show faith in their own abilities. So remember, the first step to achieving anything is believing you can do it.