Hello NoThanksForTheMemories.
I don't post very much any longer, but your question touches on things that are very important to me, and that I wrestled with long and hard. I want to share with you two things I wrote, long ago, that touch on your question about what it means when a WS starts to try to understand him or herself though the metaphor of addiction.
Here is the first (I'll set the old writing off with stars before and after so it's clear what's old and what's new commentary). It's about how understanding oneself as an addict can -- can -- lead to change.
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"As an alcoholic who has now been sober for two decades, maybe I can offer a thought about the addiction analogy for affairs. First of all, I very much believe in it. It is not a perfect analogy. Chemical addition is a very direct biological mechanism, though not a fully understood one. Someday it may be curable by some kind of direct medical intervention. It could happen. I doubt, by contrast, that there will ever be a "stay faithful" pill or gene splice.
But setting that aside, there are clearly a lot of behavioral analogies between the behaviors of addicts and the behavior of many waywards.
Perhaps if we look at the way the question of addiction was actually handled as I was wrestling with alcoholism, it would help salvage some of the utility of it for thinking about infidelity too.
The key thing is, in its context in AA, addiction is ALWAYS presented as one side of a paradox, NEVER alone.
Yes, I was addicted to alcohol, so in a very real sense, I was suffering from a disease and was doing things that were a result of the disease process. This is important, as it offers hope that you can become different, and hope is a very important thing to have at rock bottom.
But it does not relieve us of responsibility. Yes, I can make an abstract argument that I had a disease, and addiction, and I was therefore not responsible. And there is some dry, abstract logical merit to that argument. BUT, and the but is critical, AA taught me from Day 1 that the ONLY way I would recover was if I accepted total responsibility for my actions and decisions anyway, and owned them and the damage they caused 100%. They ONLY way. NO other.
So, it's a paradox. I am an addict. Yet I would not be sober and enjoying the unspeakable blessing of being fully present in the lives of my loved ones if I had stopped there and just laid it all off on a disease. No, I got and stayed sober through voluntarily accepting responsibility for the decision to drink and all the outcomes that came from it, and choosing to make a different decision forever going forward, and working to apologize to those I harmed and make amends through different actions going forward, forever.
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New commentary: so this idea, what I call "the paradox of responsibility" is one of the most true things I know, in my own life, for my own mental and spiritual health. The understanding that addiction is not an excuse, and that the ONLY road to self-respect is to TAKE RESPONSIBILITY for your choices, and not to try to lay them off on the phenomenon or the process of addiction. To take responsibility voluntarily, seek to make what amends you can, and do the deep work of learning to live with yourself without anesthetizing yourself, and, without sacrificing or disregarding or dehumanizing other people in the process of seeking the anesthesia.
Second quote from something I wrote long ago:
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I think in our culture at large there is a very strong public set of narratives of theatrical self-redemption and public rehabilitation. These kinds of narratives are very prominent in the literature of self-help. They are strong in popular media--daytime talk, sports media, women's media, TED talks, and also in a certain kind of semi-Christian or culturally but not theologically Christian popular counselling literature.
The point is, many different communities which otherwise don't have much in common share in this common American pop culture master narrative of self-redemption.
This narrative, regardless of the specific trappings, always involves a few common tropes. The speaker is always speaking from hindsight. They tell a story of personal fall, a period of fairly theatrical comeuppance with some theatrical acts of public or showy contrition, tell of How I Learned Something in the best after-school special style, and then tell of How much better a person they are as the result of this adversity, how it became a milestone for gratifying personal growth. And then, silently or overtly, they wait for applause, positive feedback, validation, ego kibble.
This narrative is everywhere. And, one can see how it is crack to newly exposed waywards, or a subset of them. Because the whole package so appeals to that wayward need to get validation without real introspection and real accountability. "Ok yes I screwed up but I've learned! In one cathartic moment I saw who I was and now I am already different! And gosh, I can already see ways to package this story that keep me at the center, and make this my hero's journey, and will get me kibble for the excellence of my public contrition and my inspiring journey of redemption! Woo who, TED talk or church small group leadership, here I come!"
But all this skips the real heart of contrition, which is the hard grinding work of accepting real responsibility, understanding and rewiring yourself, and that delicate work HikingOut speaks of, of coming to accept who you really are, and, coming to authentically love yourself again (or more often, for the first time) while still and always shouldering accountability and the need to make what atonement you can for your past harms.
Not everyone is up for it. And some, who might have been up for it with better luck, never find a place like SI or a challenging counsellor, and instead find the literature of cheap redemption and go all in on it.
To me, the tell of someone in the thrall of cheap redemption is the key phrase "our marriage is (or our marriage can be) better than ever." This is not a thought or phrasing or assertion that comes to the lips of someone with a contrite heart. The truly contrite heart is humble. It is dedicated to being safe and empathetic each day. It focuses on gratitude. And, it is not proud or boastful. Not mired in shame any longer either, but not boastful.
So, setting aside what the BS may or may not be communicating in these situations, I believe there are sometimes WSes on the other side who try to lock both themselves and their BS into the master narrative of cheap contrition--and who never find the still and humble heart of real contrition as a result.
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So take all this together, and I guess the thought I offer you would be -- you can tell how your WS is using the metaphor of addiction if you judge by his behavior, by his actions.
Is he using it for real self understanding? Or is it the theatrics of cheap contrition?
He might be sincere about it -- but if he is, the evidence will show when he starts to embrace the paradox of responsibility. When he shows a humble heart, is contrite, is curious about you, makes himself small and makes a lot of space for you.
Or -- is he using it as a crutch and part of a master narrative of cheap contrition and cheap and theatrical redemption?
If so, that will show too, and very obviously -- all his speech will be about himself, his hero's journey, the fascinating person which is himself and the marvelous journey which is his redemption. And he will be casting you as the Greek chorus whose only real job is to be his audience for his soliloquy.
You'll know if it's the latter real fast. If it might be the former-- wait and see, if you wish to. Time will tell.