Everyone misses days! I'm a college student working three jobs! It's a good day if I get to the mat, but saying "I do yoga" doesn't come with the qualifier "I do yoga everyday". I would love to get the mat every day, but for me, and a lot of other people, it doesn't happen with our busy schedules. Don't beat yourself up if it's not a daily habit, but give thanks for all the times when you can!