Waitlisted students, even though you've elected to be placed on a waiting list for a college you really want to attend, you still have to officially commit to a school that accepted you, and today is the last day to do it. Don't forget.
And when you officially do commit, allow yourself to be excited. Don't just spend the next week or two weeks or two months crossing your fingers that you'll be taken off the waitlist. I know it's not easy. But you really should make today a celebratory day. This school you've picked said, "Yes." They didn't need to wait to see who else enrolled before they admitted you. They deserve some excitement, and so do you. Make an emotional commitment to this school. The waitlist school is your back-up plan.