Impact

“Impact is the book I wish I’d had when I was embarking on my journey to become a changemaker. Christen and Tammy have poured their immense experience into every single one of these pages and by the time you’ve finished this book, you’ll be bursting with ideas and passion to make this world a better place!”–Isha Sesay, journalist and author of Beneath the Tamarind Tree: A Story of Courage, Family, and the Lost Schoolgirls of Boko Haram“An action-oriented must-read for every ambitious changemaker.”–Meena Harris, founder and CEO of Phenomenal, and bestselling author of Kamala and Maya’s Big Idea“Christen and Tammy offer tangible approaches to help us navigate our plans for transformation within our communities and around the globe.”–Jamia Wilson, executive director and publisher of the Feminist Press at CUNY and author of Step Into Your Power“Want to make a difference? Impact is your guide for how to make change in a world that desperately needs it.”–Amanda Gorman, Inaugural Youth Poet Laureate of the US“When you’re feeling overwhelmed, this book is your go-to resource to focus your ideas and bravely commit to the world you want to build.”–Reshma Saujani, founder and CEO of Girls Who Code and bestselling author of Brave, Not Perfect

As Founders of She’s the First, Christen Brandt and Tammy Tibbetts built a wildly successful girls’ rights nonprofit, from the ground up over the past decade. STF teams up with local organizations around the globe and directly impacts more than 11,000 girls. Tammy and Christen’s work is supported by Michelle Obama, the United Nations, Diane von Furstenberg, major brands, 200+ campus chapters, and hundreds of thousands of everyday changemakers worldwide. They live in New York City.