One sunny afternoon in 1982, a young businessman experienced a terrifying mugging in New York City that shook him to his core.

Tortured by nightmares about the teens who roughed him up, Steve Mariotti sought counseling. When his therapist suggested that he face his fears, Mariotti closed his small import-export business and became a teacher at the city's most notorious public school--Boys and Girls High in Bed-Stuy.

Although his nightmares promptly ceased, Mariotti's out-of-control students rapidly drove him to despair.

One day, Mariotti stepped out of the classroom so his students wouldn't see him cry. In a desperate move to save his job, he took off his watch and marched back in with an impromptu sales pitch for it. To his astonishment, his students were riveted. He was able to successfully lead a math lesson for the first time.

Mariotti realized his students felt trapped in soul-crushing poverty. They saw zero connection between school and improving their lives. Whenever Mariotti connected their lessons to entrepreneurship, though, even his most disruptive students got excited about learning.

School administrators disapproved of Mariotti discussing money in the classroom, however. He was repeatedly fired before receiving one last-ditch assignment: an offsite program for special-ed students expelled from the public schools for violent crimes.

The success Mariotti had with these forgotten children—including coverage in the Daily News, The New York Times, and World News Tonight—inspired him to found the nonprofit Network for Teaching Entrepreneurship to bring entrepreneurship education to low-income youth.

By turns tragic and hilarious, Goodbye Homeboy shares Mariotti's flaws and missteps as he connects deeply with his troubled students, and woos the most influential people in the world into helping them—saving himself in the process.

Today, Mariotti is widely recognized as the world's leading advocate for entrepreneurship education. More than one million young people from Chicago to China have graduated from NFTE programs, and NFTE counts Sean Combs, Chelsea Clinton, Diana Davis Spencer, and many more business, entertainment, and community leaders among its staunchest supporters.

As Goodbye Homeboy powerfully illustrates, a spark of hope really can empower us to overcome life's greatest hardships.