Badass Habits: Cultivate the Awareness, Boundaries, and Daily Upgrades You Need to Make Them Stick by Jen Sincero

I picked up Badass Habits because I’m a big fan of Jen Sincero’s You Are a Badass. I love her direct, no-nonsense motivational style, and some of the key takeaways from her previous book still resonate with me. I was surprised to find Badass Habits, apparently I was under the mistaken impression You Are a Badass was a more recent release, given I still see it constantly in prominent positions in bookstores and Target. This led me down a Jen Sincero rabbit hole! But I digress—I’ve corrected my misconception and now plan to explore her entire collection.

Having read numerous self-help books, I’ve noticed many recurring themes, especially those based on scientific studies. Badass Habits is no exception, but Sincero’s unique motivational style truly sets it apart. Her brash, “tough love” approach resonates with me, helping me internalize mental models and behavioral changes. She also shares personal anecdotes, illustrating how these practices contributed to her own success. I guess I respond better to directness than gentle encouragement.

The book’s central theme is shifting your mindset from simply doing a habit to becoming the person who embodies that habit. This approach emphasizes aligning your identity with your desired behaviors. Sincero stresses the importance of language, boundaries, environment, and radical self-responsibility in this transformation. For example, she suggests asking yourself, “What would the person I want to become say?” and using language that reflects that identity. She also emphasizes setting boundaries to protect your transformation, as people may resist your changes due to their own discomfort.

Sincero outlines a 21-day plan, divided into three weeks. Week one focuses on cultivating awareness and building a foundation. Week two emphasizes strengthening boundaries and taking action. Week three is about integration and embodying your new identity.

I was particularly drawn to the “get clear on your habit and know your why” days in week one. This foundational step forces you to be specific and intentional about the person you want to become and your reasons. Mindfulness is a recurring theme throughout the plan, which I appreciate. Sincero encourages being present with your new habit, observing your internal dialogue, practicing self-forgiveness, and affirming your belief in your transformed self.

While I haven’t completed the 21-day plan, I’ve started incorporating many of Sincero’s ideas into my daily life. I’ve found value in getting clear on my goals, using affirmations and visualizations, and adjusting my language to reflect my desired identity. For example, I’ve started using affirmations like, “I am a disciplined writer,” and visualizing myself completing my writing projects. I’ve also been more mindful of my internal dialogue, challenging negative self-talk.

I recommend this book to anyone who appreciates a direct, high-energy motivational approach. Sincero’s blend of mindfulness and “tough love” is particularly effective for those who respond well to that style. Have you tried the 21-day plan? What are your biggest habit-forming challenges? Who are your favorite self-help authors? Share your thoughts in the comments below!