Destiny Is Uncertain

Destiny is determined by God, and cause and effect are determined by yourself. If you are satisfied with your good fortune, will you change your destiny against nature? Success will soar to the sky, failure will turn into ashes, but how do you know whether success is also destined. How do you know that even if you are an immortal or a saint, you are not in your destiny? No matter how detached the practice is, no matter how high the level is, how can one know that it is not in destiny.