Before Christina Tosi started Milk Bar—the trendy bakery known for its covetable, playful desserts—she was studying math and Italian in college with dreams of becoming a mathematician, a UN translator, or a perhaps a truck driver (yes, really). "I like to be uncomfortable," the entrepreneur tells Hillary Kerr on episode 39 of Second Life. Drawn to restaurant life with a passion for baking, Tosi moved on from her mathematical endeavors to pursue cooking at culinary school and (with a lot of hard work) went on to found her very own wildly successful bakery. Here's how she made it happen.Sign up for Christina Tosi's new Beyond Baking mailer at christinatosi.com.