Sophia Bush has been in the public eye for a long time, coming to massive fame on the teen drama One Tree Hill when she was just 21 years old. Now, after spending over half of her life in the spotlight, she's telling her story in her own words.

In her new memoir, And I Will Tell You Mine , the actor writes about her early life, her acting career, her love life—including with wife Ashlyn Harris —and her activism in politics and women's rights. Turns out, it took a lot of introspection (and literally burning some pages!) to get to the final product.

"It was this excavation, and it required uncomfortable light being shed, accountability, honesty, and then it required this patience and tenderness and mothering in a way," Bush tells Marie Claire editor-in-chief Nikki Ogunnaike on the latest episode of "Nice Talk" .

Writing a memoir means editing as you go, and Bush realized that she didn't need to include every detail to get across the points she wanted to share.…