When you awake from a bad dream, your reaction probably is not, "Why did that happen to me?" but "I'm glad that was only a dream!" You realize that you weren't really in the dream and the dream wasn't in you. It was no part of your actual experience. So you dismiss it and proceed with the day's activities.
Similarly, when we experience a healing in Christian Science, we can gratefully realize that there never was any reality in the problem. We weren't in it, nor was it in us. Even if it seemed to be going on for a long time, it wasn't really happening at all. Disease and sin don't touch man's true identity any more than a dream does, because God, good, is the only creator, the source of perfect being. Disease and sin are the unreal dreams of mortality. The solution in both instances is to wake up to spiritual reality.
Healing is a process of awaking to the realities of true being, not changing something real. It means we are awaking in some degree to the fact of man's perfection as God's image. We are not, however, changing material imperfection into spiritual perfection. That would be like trying to turn falsity into truth. We don't change a dream or try to heal it or remove ourselves from it. We awake to the truth that the dream was never real. The dream of disease never had a cause or a history, for God never knew or created it.