Sorry in advance if this is a long post but I feel I really need some help and advice.

I'm a clarinet teacher; started teaching 5 years ago, qualified to DipABRSM level.
Just recently, in the last year or two, I've begun to feel that all the joy has gone out of the job and I am finding it very dull. My teaching seems to have turned in to me 'giving the pupils a list of things to put right' in pieces, and I can't seem to find any enthusiasm for the job anymore. About two years ago I took on a challenging school teaching 20 minute lessons (oh God) which I think has made the problem worse.

I never had a nice teacher when I was learning and used to come out of my lessons crying. Further, I'm not sure I ever heard 'music' for his reason, but more 'sound.' This makes it very hard to teach 'music', rather than 'notes', of course. My problem, as I see it, is that I almost am not sure why people learn music.

I have a great relationship with all my kids and relate to them well, but I just don't know how to break this feeling of joylessness. I have had issues with depression in the past but I don't feel this is the reason I am not enjoying my job. None of my pupils are practising, even though they like me and I like them a lot. (I ought to say that I did enjoy the work in the first two years but then it was still a novelty!)

Any help whatsoever, or even comments, would be very valuable to me as they would give me food for thought. Thanks