Take a deep breath. People are leaving; this is scary. However, you've been doing a pretty good job of keeping it together, and this is commendable, but it's important to continue over the next couple days. Just remember to keep breathing and keep repeating "It's ok. You can do this."
Be excited. Be psyched. Remember the feeling of each moment.
The warning, musical, the hour, irrevocable.
Take the plunge!