In a certain respect, I feel we are not equipped and it is not our job to TRY to heal people (not that you are saying we should). Ellis Amdur wrote a good article on this. From my own experience traveling down the road of aikido after a life with abuse and neglect, and from my own experience teaching , I find that Aikido itself heals. On a very real level the seen and unseen elements of practice rise to meet the injured person in a way that we ourselves could very possibly never concieve. Well structured practice, adhering to the movements and approaching the mat with total sincerity are a few of the tools of practice that have helped to support healing in my travel.In my experience the waza is the greatest healer. As long as we keep aikido in our eyes first, above all else, we will provide healthy opportunities for people to discover their healing process in or out of Aikido.
In my work with at-risk teens the single greatest tool has been the courage to be really myself, to say the 'wrong' thing, to tell the truth as I see it, to be honest in my own struggles and to get out of the way of Aikido as it is transmitted through me from the teachings of my teachers. Because I don't sell salvation we all have to work together to find our paths. The students respect this ultimately and many become helpers in life because of it.
That is a really good point to remember for anyone that is involved in health, whether it be mental or physical, just do your thing, enjoy it, do it well and people may be able to heal themselves as a result.
Having the courage to say the wrong things and make mistakes is pretty much the 'right' thing to do, as far as I see it.