[BornInTheUSSR]

I'm sure if you wrote a technical post about something you have deep experience with in mobile or web dev, many people would probably feel the same way reading your article. There's too much for any one person to know.

Read those articles and take the time to research the parts you don't understand until you really grok it. Read and try to understand good code, take every opportunity to go a little bit deeper into the tools you use (web frameworks, libraries, etc) if they are open-source. Getting better sometimes means knowing more, but mostly it's about not being afraid to dive in.