Some functions of healing, related to awakening…
Before awakening, healing (of our human self) makes it easier to be who we take ourselves to be. It also makes it easier for those around us to be who they take themselves to be!
Healing reduces drama and the sense of split, which makes it easier for what we are to notice itself. (The opposite is also valid. In some cases, extremes of drama and suffering brings a shift into what we are to notice itself, but going in this direction intentionally doesn’t make much sense.)
And following/within awakening, healing of our human self influences how it functions in the world within this new context of what we are awake to itself. There is no sense of a need for healing, but it can still have a practical function. It is part of skillful means.