How Do You Stay Relevant In a Constantly Changing Environment?

I'm linking to an article where staying relevant in business in a constantly changing world is the theme.

The way things are changing in publishing, I know exactly what this article is talking about. I don't think anyone in any profession can avoid these changes. I even know people with Antique shops who've had to learn how to sell online because that's where a lot of the buyers and designers are going now. Those who didn't bother to learn have become obsolete.

To prepare, Mr. Hallock, 2...