Jeff Lawson

Among the many business lessons Jeff Lawson has learned, there's this: Don't expect to get things done if you wait until you're perfectly prepared.

Lawson is co-founder and CEO of Twilio, a company that makes it easy for apps to contact you. (Ever wonder how you can send a text to your Uber driver in the app, or get one in OpenTable when your seat is ready? Twilio does that.)