Have you ever thought something was black magic and available solely to experts only to discover that it's pretty straightforward? I just had that experience today with logs in Linux.
Back in the day, I was very technical - mathematics, programming, technical writing, etc. These days I'm far less so, but once in a while I need to pitch in and it's good to find out I can still do it if required.
Moral of the story: Don't sell yourself short! Sure, some things will be beyond you, but at least give yourself the opportunity to succeed.