Rob Hale thinks he's an unlikely person to listen to when it comes to dealmaking. After all, he became a billionaire and lost it all by the age of 35. But Rob rebounded from the failure of Network Plus to co-found Granite Telecommunications, which made him a billionaire again and eventually co-owner of the Boston Celtics. That failure and rebound yielded three essential business lessons that Rob shared with attendees at the 2023 Boston Smart Business Dealmakers Conference.