A few things are simultaneously true:
1. We have a truly fantastic level of agency as actors in the world. A single human can build a house out of raw materials, write a book series with hundreds of settings and believable characters, start a war, etc.
2. In order to make the most of that agency, we need a psychological system that makes us feel empowered to use it. Having nature's most impressive brain would be pointless if we all believed everything we tried was doomed to fail anyway so we should just sit in the dirt and eat slugs.
3. We are also corporeal objects made of surprisingly fragile meat and bone subject to the careless whims of physics. Through no fault or intention of anyone, all of your agency can be completely taken in an instant. Just be standing in the wrong place when a tree branch snaps off, have one cell misdivide and become cancerous, choke on a grape.
We need 2 in order to make the most of 1. But the more we believe ourselves in control, the more horrific contemplating 3 becomes.
I often wonder if we evolved magical thinking and all of its manifestations like religion, parapsychology, destiny, fate, etc. in order to hold these three realizations in some sort of stable configuration.