Jen Sincero – Author Biography
Early Life
Jen Sincero grew up in the United States and spent her early adult years as a freelance writer living, by her own account, in a converted garage — broke, skeptical of the self-help world, and resistant to anything resembling “woo-woo” thinking. She wrote for magazines and worked various jobs while struggling to make a living from her writing.
Career
Sincero’s life changed when, reluctantly, she began studying personal development and coaching — and found that it worked. She became a success coach, working with everyone from struggling artists to executives, and distilled what she learned into You Are a Badass (2013). Written in a irreverent, funny, straight-talking voice, the book became a word-of-mouth phenomenon, spending years on bestseller lists and selling millions of copies. She followed it with You Are a Badass at Making Money (2017), You Are a Badass Every Day (2018), and Badass Habits (2020), building one of the most successful self-help brands of the decade.
Major Works
Sincero’s “Badass” books are You Are a Badass: How to Stop Doubting Your Greatness and Start Living an Awesome Life (2013), You Are a Badass at Making Money (2017), You Are a Badass Every Day (2018), and Badass Habits (2020). Her earlier memoir Don’t Sleep with Your Drummer (2003) chronicled her years in a rock band.
Writing Style and Themes
Sincero writes like a funny, foul-mouthed friend who genuinely wants you to succeed — profane, self-deprecating, and allergic to pretension. Her core message is that most people sabotage themselves with limiting beliefs about money and worthiness, and that changing your inner story changes your outer results. She blends practical advice (get clear on what you want, take bold action) with mindset work (visualization, gratitude, raising your “frequency”). Her genius was packaging self-help for people who hate self-help.
Legacy
Jen Sincero became one of the defining self-help voices of the 2010s, proving that authenticity and humor could sell personal development to a skeptical generation. You Are a Badass remains a perennial bestseller, a fixture of gift-giving and book clubs. She turned a converted-garage life into a multimillion-dollar brand — the ultimate proof of her own thesis.
