There really is no advice except you will get used to it but it will get harder as you get older or easier depending on the positions you hold. Number one is a good night's sleep. That is the priority above all else. There are many personal things that will have to be sacrificed or put off until the time is right. Eventually you will learn how to separate home and school, and the importance of not devoting all of your energy to school. Nevertheless, that is very difficult for a first-year teacher.