The Master of Changing Life in Time and Space

This is not a fairy tale, this is a science fiction hero legend, so there is no "eternally happy prince and princess", only the ants wallowing in the lower levels and the "life-changing master" who possesses people through multiple parallel time and space to change their lives and save all sentient beings. A hero has two faces: one is a hero and the other is an ordinary person. As a hero, Ji An is full of courage. His famous saying is: "Unlucky man, God is unfair to you, so let me give you justice." As an ordinary person, Ji An hopes to rewrite his life through mission rewards. How many missions do you need to complete and how many times do you need to travel through before you can correct your past mistakes and gain the most ordinary happiness?