At 15, Marcus Bullock made a mistake that landed him seven years in prison for carjacking. Growing up in Washington, D.C., he felt hopeless behind bars—until letters from his mom kept him connected to the outside world. That spark of hope stuck with him. After his release in 2004, Marcus launched Flikshop, an app that lets families send postcards to incarcerated loved ones, bridging the gap he once felt. “Mail was my lifeline,” he says. Now a successful entrepreneur, Marcus has investors like John Legend backing him, and he’s been featured in Forbes and The Washington Post. Even better? He hires formerly incarcerated people, turning his past into a platform for others. From a cell to a CEO’s desk, Marcus built prosperity one postcard at a time.