Ask HN: How do you find problems?

I'm a college student near my senior year. I consider myself well-read, and well traveled in my toy applications. I've committed to projects, read many, many books in my spare time, and I consider myself a polyglot. I think I'm knowledgeable enough to enter into a project confidently. I have an itch, and it's an itch to create for myself. However, I want to create something to scratch somebody else's itch. How would I go about trying to find a problem to solve, or am I being too short sighted?