Oldnavigator - I also became a teacher, although in my case not straight after leaving the service. You appear to be having better luck than I had in teaching. After four years I decided that I no longer wanted to spend every morning wishing is it was 3.30, every Monday wishing it was Friday and every 1st day of term wishing it was the last. I got out out, went into business on my own, and in spite of the fact I never even earned the modest amount I had been earning as a teacher, I never regretted it for a minute.
Good luck to you, and to anyone on here who thinks teaching is an easy option (apparently short hours, long holidays etc) just try it. I've seen both sides and nothing in my service career was remotely as stressful as teaching.