All skills can be viewed on a spectrum — on one end, people know only the bare minimum of how to do something and on the other end are true experts that understand both how to perform the skill and the mechanics behind it.
Too often, we view ourselves — or those we supervise — in a binary way, thinking we are good at something or we aren’t. It leads to undue anxiety or imposter syndrome, and probably influences career choices more than we care to admit.
Instead of considering how to master something, think of it in a more gradual approach. Aim to get one step further on the spectrum. Getting better is a less stressful route to getting good.