Teaching although a very rewarding job can be both mentally and physically challenging at times and as a teacher (unlike in some other professions) you can’t just book time off when you feel you need a break. People moan about how much holiday teachers get, but actually if they are having problems whether it be work or home related mid-term they have to see it through until the next scheduled school holiday.
All teachers need support and this can be found in many ways. Family and friends are often a first port of call for a place to vent or discuss concerns. If the concern is to do with an individual pupil or specifically school related, then this may not be appropriate and you may find it better to talk to a colleague or head teacher. Alternatively there is the NUT National Union for Teachers that have recently set up a dedicated helpline for teachers to call with any concerns they may want to discuss.