Surfer - I don't have much time so I will provide more depth later in regards to my 'detachment', but for now, I just want to say that you're not alone, we've all been through a sh1tstorm and while none of it makes any damn sense to us, there does seem to be a significant amount of similarities in our WAS with each of our "different" situations...
As far as "doing detachment"... I think that is very misunderstood term/process around here on the forums, and I'll elaborate on this later, but for now... think about what provides joy in your life today? What makes you excited and enthusiatic? What makes you feel alive? Have you done much self-discovery lately? These are the things that matter right now... they matter today. This is where you will find your "detachment"... not from "doing things (no contact, ignoring, acting "as if", etc)... the real detachment comes from within yourself, not from "ideas".