Growing up, I was told to do what I am supposed to do. Nothing more and not to cross borders. But growth comes from doing things you are not qualified to do.
Take exercise for example. Your muscle starts to grow only when you lift weights beyond your ability.
And with Knowledge, the same thing. You have to read beyond what you know to expand your knowledge.
Similarly, at work and carrier, growth comes when you do things you are not qualified to do.
Be careful though. You don’t want to hurt yourself lifting 200lbs when you are only lifting 50lbs now.