National Bestseller Sanna Marin, the world's youngest prime minister when she took office, shares her inspiring path to leadership and encourages readers to effect change in the world. In Hope in Action, Sanna Marin takes readers on the extraordinary journey of her trailblazing career and exemplifies a new kind of leadership. When she became prime minister of Finland at just thirty-four years old, Marin was the youngest world leader at the time, captivating international attention with her progressive ideas and decisive action in a crisis. Marin's story is one of resilience and hope. The first in her family to attend university, she broke barriers to become a highly respected role model for many young girls and women. Her term as prime minister saw historic milestones--she led Finland through the COVID-19 pandemic, and her government implemented reforms addressing climate change, social justice, and equality. She helped the country navigate neighboring Russia's devastating full-scale invasion of Ukraine and Finland's rapid joining of NATO--the swiftest entry for any country in the alliance's history. Through vivid retellings of her experiences, Marin shares how she overcame significant political challenges and how she coped with her personal life becoming public, as in an incident that sparked a media frenzy and prompted women around the world to express their support. Hope in Action is more than a memoir--it's a rallying cry. Marin urges the next generation of leaders to bring their full selves to the job. Her story is an empowering testament to the opportunities we have to effect real change.