All adults are prone to guilt; in teaching, it’s the main thing that stops you from having a work-life balance. Everyone else is either coping at school, or expected to cope. It’s hard telling your line manager that you didn’t have the time to finish a PowerPoint for a meeting because you didn’t have the time, so you struggle to do it in your break or at lunch, or even while you are in front of a class. Your work suffers because you don’t seem to have the time to do the things you want to do at work. Your life at home suffers because you keep on doing the things you think you should have done at work.
This quote is from a great article about work-life balance for teachers published in The Guardian. Read some tips for managing it here