Depending of where you live, you are either in the middle of summer or within a couple of weeks of starting school. Either way, read this letter now and read it again on your first day back:
This will be the most difficult, challenging thing you will ever do. It will push you to your limits as a person. It will almost break you. There are times when it will feel like life has sucker-punched you, then offered you crutches, then taken the crutches and is beating you over the back with them while laughing hysterically.
Teaching will also be the most beautiful thing that has ever happened to you.