I think (and I know from my own experience) that the disconnection is because we have cut ourselves off from our feelings.
You are still there, but you have "defended" your castle so well that even YOU cannot get in and turn on the lights.
You have to let yourself back into your castle.
As I am coming to understand it, you find a way to get un-stuck by fully experiencing the feelings that you've repressed. It may take time to get to them. I see now that I am beginning that process of really getting at the feelings.
I've been feeling the beginnings of feeling a bit odd lately and when that happens, if I am able to tell myself that it's not physical, but most likely emotional, I let the tears come. I let them come for as long and as hard as they want. Those moments of weeping are the salve of heaven, because they actually constitute the healing, provided we let ourselves totally go and feel the pain in its awfulness completely, without any attempt to flee.
Within seconds, after the weeping stops, I am back to normal. There are more tears, and some will come when I am alone, and some will come when I am in therapy two times a week, and I will always remember that tears are God's gifts of healing to us -- particularly when we need to reconnect with feelings long buried by us in our unconscious because when the events that caused them occurred, we were unable to express our pain in a healthy way. We CAN express our old pain in a healthy way today and we are thereby transformed.
Two great sites with information:
To avoid making it sound easy, let me just add that I wanted to avoid crying at first, and then I remembered the truth.
There is something very scary about the moments just before one "agrees" to let go. I always seem to at first want to run away, and there's something frightening in those moments, but I think I am getting a bit better at skipping that whole routine, which can last hours.
From now on I am "cutting to the chase" and getting the waterworks started as soon as I get that glimpse that something's not right.
Of course, this is alone, not when I'm out and about.