Chris? Gardner said, "I appreciate being rejected every day." The constant "rejection" here means constantly hitting a wall and encountering setbacks. The question here is why I appreciate being rejected. In fact, it is to answer why we should appreciate setbacks, because we should thank setbacks. People grow and develop in the process of understanding setbacks and overcoming them. No doubt, Chris? Gardner is a strong man who overcomes setbacks. For the strong, setbacks can temper people's will, stimulate people's fighting spirit and make people smart. In this sense, frustration is the only way to success.

So the answer is:

There are inevitably setbacks in life, and people grow and develop in the process of understanding setbacks and overcoming them. For the strong, setbacks can temper people's will, stimulate people's fighting spirit and make people smart; In this sense, frustration is the only way to success.