Teaching can be a very rewarding job but it is also often highly stressful and demanding. There may come a time when you feel that you no longer want to be a teacher but still would like to work in education. One option you have is to be a teaching assistant. Teaching assistants often have less responsibility such as marking and lesson planning but may still get to work with a small group of children teaching them a topic or even covering the class teacher when he / she is out on other duties.
Stepping down from teaching and going in to a teaching assistant role can be quite hard for some people as it may feel like you are taking a step backwards. You will not have as much say as what goes on in the classroom and will have to do what the teacher asks you to.
The other option you have is to become a supply teacher. You can pick your own days and may decide that working a few days a week is enough to help you financially, as often you get paid more per day for supply work, but still gives you that much needed break from full time teaching.