> I feel a lack of confidence because I surround myself with people who are smarter and better at things than me a lot of the time.

It's not feasible in a number of organizations, but things like this are why it's important for developers to interact with the users of the software that they create. You learn so much more about what works and doesn't work for the users. You learn their vocabulary and assumptions about using apps which is often quite different from "power users" like we tend to be.