This whole area I feel passionate about. I have a few quick suggestions:
(1) Appraisal / PM targets must include at least one which is focused on self-care
(2) Ofsted inspections (and ISI) include a proper investigation of workload [if appraisal included this, would be relatively easy to do as there should be records of what each teacher has done / been supported with...], with schools which give only tokenistic support for sensible work-life balance / self care etc criticised accordingly
(3) A senior manager with heart for this stuff (guess there might be some somewhere?
- eg Graham!!) to have this whole area in their job description etc.
My wife is an alternative health therapist (ex English teacher), and has begun doing INSET with schools, partly with a view to getting clients amongst the exhausted teachers, which she can then show how to look after themselves better [having witnessed at close hand not only me, but many other teachers struggling like crazy with their mental, physical and spiritual health, she has a passion for this]. One enlightened local primary school is paying for ALL their teachers to have a 10-week programme of 'teacher self-care', part one-to-one and part group work - because the Head, having been 'treated' by my wife, has seen the benefits not only for her own well-being, but the positive modelling for the children too.
The other thing I would add to this is that in my experience many senior managers are if anything MORE run off their feet than those at the chalk face, hence the s**t gets passed down rather than intercepted... it should at least become a bit of stemflow and leafdrip rather than the full whammy...