I answer the same types of questions. I tend to ask the same types of questions. I am not going anywhere with my Perl programming skills.

I see two possible scenarios:

1. You know all there is to know about Perl and programming in general. It's impossible to improve further, so you might as well move on to other subjects.
2. You still have more to learn. The only reason you feel you're not improving is because you don't know what to improve upon.

So simple solution: first figure out what you want to be able to do, then learn how to do it. Do you want to be able to explain basic Perl programming better? Start teaching Perl to non-programmers, write tutorials and make them available online. Want to be able to do OO programming in Perl? Pick up a good book on the subject and start a project to apply the concepts.