Communicate your feelings today. If you're feeling good, let folks know. And if you're feeling grumpy, let them know even sooner! Keeping people informed about your every emotion might seem like a silly thing to do, but it's not. It's important to prepare people for those times when you're feeling moody and slow so that they can be ready to pick up the slack. A few considerate souls are even going to be happy to know that they have the opportunity to cheer you up.