That is a perspective one acquires after a while. Another huge part is having the knowledge required to not blunder. The questions a beginner SE might ask are along the lines of "what are pipes? how do you package something to release it? how do I revert a git commit? how do i exit vim?". I know many people who are completing degrees in CS and related fields that do not know the answer to these questions.

That said, I think the best way to learn these kind of things is on the job, if you find a company kind enough to let you practice the basics.