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Learn or perish
It should be part of your regiment. I know one person, a former coworker, who never bothered to move out of his comfort zone. He learned the basics and did not keep up with changes in the field. That was all well and fine until he had to work with software packages, code libraries and methodologies that were current. He had no idea what he was doing even though the methodologies were standard practice in the field. He made a mad dash and tried to play catch up ball but he was so far behind that he was not able to bring his skill set current before it cost him his job.