I'm in RCIA classes to convert to Catholicism. I'm skipping this Easter's big confirmation event to give it some more time. I'm chiming in to reply to this comment. Catholicism is a practical way to deal with the guilt you (should?) already feel.
Religion has had that role of support and counsel for millennia. Therapy is a newcomer on the scene, with generally little evidence for its efficacy above and beyond what talking to a religious leader would provide; so much so that there is a growing movement for "evidence-based therapy", whose existence might imply that the other kind is evidence-free.
I think you're misrepresenting the efficacy of psychotherapy, and I don't think you'll have a lot of success pitching religion as an evidence-based alternative.
This makes sense, but none of it supports an argument that religious observance is a reasonable alternative to acute mental health care. Religious people are healthier than non-religious people, but when their appendices burst, they still need a doctor, not a deacon.