Flaubert once noted that "the art of writing is the art of discovering what you believe." This couldn't be more true for Kristin Cavallari, who is discovering through writing that she believes in carbs, but only some carbs—not the white ones. On the 498th day before her game-changing tip book Balancing on Heels drops, Kristin has made us a food diary.

What will you be doing roughly 13-17 months from now? Maybe you'll finally be taking a stay-cation in sunny Tulum, where you could live by then. Perhaps you'll be starting a new job at the soda can factory. You might even be well into your second pregnancy if you start on the first one right now. Change is scary, but take comfort in the knowledge that while your life may look different 400-500 days from now, one thing is for certain: you'll be able to read former Laguna Beach star Kristin Cavallari's first book then, probably.