Commoner Destiny

The world is like a big river, and people are like fish and shrimps in it. People often want to overturn their destiny and take control of themselves, so they jump out of the water. Some people are captured by birds, some people die because they leave the water, some people fall back into the water after staying for a while, and some people get what they want by being transcendent. What is fate? Swimming in the river for your life? Is it also destiny to jump out? He lay on the ground and looked up at the stars, puzzled.