The advice to ignore (in certain situations) is to strive to become “well-rounded”—to move from company to company, looking to pick up different types of experience every year or two, when starting out. That’s useful in the abstract, but if you find that strength of yours (as an individual contributor or a team leader) at a company whose mission you are truly passionate about, take a risk—commit and double down, and rise through the ranks. Maybe you’ll be running the place before you know it!