Mof4, I'm coming from a more "eastern," Buddha-like(?) view of things, where you attempt to understand the true nature of something before you even THINK about trying to change it. (not to be political, but look at what the western approach did for us in Iraq!) If you understand something deeply enough, you will know what to do, or *not* to do because it will be very plain. I am not a guru, I am not wise, this is just common sense, all too lacking it seems in our culture. But coming to understand something is constant work and you must have some humility.
"How do we get rid of the receptor or rewire it or change the nature of what we attract?"
Mof4, I'm saying we can't do ANY of these things because they are beyond our control, but that it isn't necessary in order to free ourselves from (most of) the pain they cause. "First know thyself." Know your own needs and wants and vulnerabilities and the mistakes in judgment you make over and over again. If you know yourself well and honestly I believe you will have emotional health, but it doesn't mean you can't get sick again. Even healthy people catch the flu once in a while, but sick people are obviously the most vulnerable.
I am still very shaky on this, but I believe I can avoid future N-virus infections by my hard-won painful knowledge of what they look and feel like and my increased knowledge of why I am vulnerable to them. I am a cell with a brain after all and *I* must make my receptor available for there to be an infection. Thanks for your good questions, they make me think. I hope you find something of value in this.
Bill