A lot of my negative pieces are akin to some act of psychic surgery, poking and prodding at some element of pain or discomfort, until it achieves an approximate objectivity, and one becomes okay with it, as opposed to fighting against it or reacting to it.
When a cause reaches oneself, one reacts to it. But if one traces that cause back through analysis and finds that the cause is not aimed at oneself in particular, but is merely some ripple that is passing over, and which is actually quite impersonal, though its proximal cause can seem personal. One is quieted and relieved a bit. One's reactive systems calm down.
This happens to be similar to how one comes to terms with pain through meditation. One observes it, traces its contours, objectifies it, shutting off the mechanisms of reaction, and mysteriously it dissolves.
And so obsessive analysis can be seen as a form of meditation. A form which can lead to madness if one isn't careful, but it can also lead to peace and reconciliation, which has a discernable effect on the emotional state, which is a global process - global in the closed system of one's mind - and whose effects cascade into actions and relations.
The exorcism carried out by the negative piece leads to psychic peace, and it clears the way for exercises in positive philosophy, or prescriptions for eventual healing action.