Gretchen Rubin is one of the most thought-provoking and influential experts on habits and happiness. She has written several New York Times best sellers, which have sold millions of copies, including The Happiness Project and Happier at Home. She also hosts the award-winning podcast Happier with Gretchen Rubin. In short, Gretchen Rubin has thought a lot about what it means to live a happy life.Her new book Outer Order, Inner Calm is a playbook that helps readers discover ways to make more room for happiness in their lives. This is something the Stoics were often writing about—finding stillness and tranquility, ridding of nonessentials that clutter our lives, learning to stay calm and sane amid life’s chaos and craziness.In our interview with Gretchen, we asked how she maintains that inner calm with something so hectic and uncertain like a book launch,I think about actions, not outcomes. That way, I stay focused on the things I can control (more or less). So I don’t think about “making the book a success,” but “writing the best book I possibly can.”That’s a good rule for all of us—doing the right things, right now. Putting our best efforts into the tasks in front of us today. Taking care of the inputs and detaching from the outcomes. Not worrying about what might happen later, or the results, or the whole picture, or the opinions of others.“The tranquility that comes when you stop caring what they say. Or think, or do,” Marcus said. “Only what you do.” Today and always, find clarity and tranquility in the simplicity of focusing on doing the best you possibly can in everything you do.