FOMO is short for "fear of missing out." And when it comes to eating better, it's a fear you need to face. The secret to facing this fear is to stay present and understand that your mind is going to make things seem worse than they are. Not having your favorite foods when you're used to having them can feel like the end of the world, but it's not. Stay mindful and pay attention to your thoughts and feelings. You'll notice yourself getting worked up, but if you stay connected to your breathing, you'll notice that you calm back down again. Remember this. It's the key to mastering your eating.