""23 things I didn't learn in college / grad school":
#4: Be the go-to person for something
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#4: Be the go-to person for something
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Striving to be an expert at something helps distinguish oneself -- from one's peers, teammates, collaborators -- in a special way. It brings a certain polish to your team's output in a predictable and reliable sense.
It takes time, it takes a lot of tinkering, a lot of deliberate practice, but the sheer act of achieving mastery in something, however narrowly scoped, is one of the most rewarding journeys one can take.
Sports have many examples of specialists -- base stealers, rebounders, free-kick takers, slog-overs specialists, serve-and-volleyers. Elizabeth Warren is a great example of an academic whose specialist knowledge propelled her to stardom.
Whether it's code-reviewing or proof-checking (of any kind) or LaTeX-hacking or tail bounds or making killer presentations or latency-optimizing, being an expert at something is a source of well-earned pride, and opens doors in unexpected ways.