What is the point of amassing knowledge if you hoard it like a dragon. You will die alone on top of your pile of facts.
Share your knowledge. Teach someone something. Write a blog post.
Maybe a hundred people have written about it before. But so what. YOU haven't written about it before.
And that's what makes what you have to say special.
Lots of people can have the same knowledge as you. No one else can have the wisdom and experience you uniquely gained.