Just got out of teaching and moved to the charity sector. I went for a few teaching jobs before moving, and at each one I knew I was only doing it to keep the status quo. The money was OK, holidays etc. In the end I took a deep breath, did some cover work and part time work while looking for other jobs. It was a risk worth taking as I couldn’t have gone on much longer doing part time stuff. Luckily I found a new job I absolutely love.
Life is too short to be stuck in something you really don’t want to be in. Don’t get caught in doing a job because it’s just something you’ve always done. Is there some part time work to keep you sustained while you look for other things?
Going back in to the same thing again just gives you excuses not to change.
Be brave, be happy! The advice from this forum made me realise it was never too late to change career etc.
Good luck with whatever you decide to do.