I have recently realized I might be a Type 4, and all of this self-focus has (surprisingly, to me) seemed to drag me back down. I relate an awful lot to the negative aspects of Type 4, and that only plays on my sense of shame and defect even further. I don't know that ignoring a problem is the answer, but I do think there is something to taking it a step at a time, in bits and pieces.
What I guess I'm trying to say, is I don't think the road to health for a Type 4 will ever be through the grime and muck (at least not for me). The more you can focus on what is good about you, and be present in the moment, the more things will fall into place (again, speaking from personal experience, and not a factual place).
I wish you nothing but good health, happiness, and the best in life. You completely deserve it.