This is my fifth year teaching and I want out. Although I consider myself lucky to have worked in two good schools with supportive HOD and SLT I am totally lost. I've got myself into such a state I feel sick and anxious about the thought of going to work and teaching my more challenging classes I've started to have some physical symptoms of stress such as tummy problems and trouble sleeping. I sometimes feel like an OK teacher but never like the amount of effort and mental energy I expel on school gets me anywhere. I think about work all the time and it is having an impact on my relationship. I look at the road ahead and I don't see myself being a teacher into older age (currently late twenties). The thought of being able to have a family of my own whilst doing this job seems totally ludicrous. I worry that if I did turn to another line of work I would still feel the same- at the moment I can't imagine ever feeling happy at work. Something which is worrying me is that the teacher I have replaced when I started was off long term sick and I know it was an incredibly difficult situation for the department / pupils who had lots of cover (which I think ha contributed to some of the behavioral difficulties I am experiencing now) . If I were to leave this year it will just mean another new teacher. It seems totally wrong to leave before the end of the school year in terms of damaging my future employability and causing a huge problem for my HOD to sort out. But the thought of leaving just feels me with huge relief despite the guilt. When is too soon to tell my HOD I want to leave teaching? Also I would be leaving to a totally blank canvas, financially i'm not doing too badly but the thought of being unable to find something else that I enjoy and pays well is quite scary. I guess I just wanted to vent and would love to hear from anyone who has been through or is going through something similar. I'm distraught something I wanted to love doing just hasn't worked out.