What if you enjoy helpdesk?

Right now I'm studying for my CCNA. I had a 7 month contract position for helpdesk, interviewing at other companies, so pretty green still. I wondered what if I end up being one of those people who actually just enjoy troubleshooting calls as I get better at it?

At some point, I wont be able to compete with fresh grads for salaries. What are ways you could specialize and move upwards with a customer focus? The only thing I know about myself is that I like knowing how things work, collecting random knowledge, and using it to help people.