A personal mantra Cohen applies at home that maps onto his approach to work: growth is a continuous process, not a fixed state to arrive at. The practical form is an annual self-comparison — this year's version of yourself against last year's — rather than judging yourself against a static competence bar.
It's the individual-level mirror of the LinkedIn's Full-Stack Builder Model's organizational claim: just as the org keeps re-forming around new tools rather than settling into a fixed structure, an individual keeps re-forming their own skill set rather than settling into "I already know how to do this job."