Tech companies, if you create addicts, you need to help them

GUEST: Two years ago, I published a book on how to make products more habit-forming. The book became a bestseller and I’m frequently asked to consult with companies—particularly tech companies—looking to make their goods and services stickier and harder to stop using.
Unfortunately, making things more engaging also makes them more potentially addictive. The techniques I describe in the book, intended to help product designers build healthy habits in their users (like using a we