You said that you do not have a natural talent for developing, so your issue is about raw skill rather than age. Maybe you should specialize further in a subjec

You said that you do not have a natural talent for developing, so your issue is about raw skill rather than age. Maybe you should specialize further in a subject area that you know well. Carrying one big "weapon" that you are skilled at would be better than carrying 50 like a "ninja".