I think perhaps what he meant by the "loss of being mentally ill" is that the illness in some ways can be a crutch, but it can also be a companion, you know? It can be this thing that occupies your life for a long long time. Kind of like a loved one who is ailing. The loss is of that loved one, say, when they die, or they stop being so ill and no longer need you. What do you do with all this time you have? How do you live your life? There is a certain loss in losing something that occupies your time - maybe he's just suggesting that you need to acknowledge this loss?

Also I don't know what you mean by harrassment, but if that is happening, REPORT HIM LIKE NOW. *nods*