I'm no expert and in fact have never learned AT properly, so let me just refer you here:
http://www.alexandertechnique.com/at.htmThe reason, you'll see, why I thought my suggestion might be seen as a strange one is that AT is really a physically-focused thing. But when I have heard people (usually musicians, occasionally dancers) rave about it - music schools in the UK sometimes offer it rather routinely - it seems to have been as much for its "quiet the mind", "focus on what's important" qualities as on what it does for excess muscle tension, which is why I thought about it in this context. Only an idea, though!
