Try to keep in mind emotional detachment and physical detachment are two separate issues. If possible you need to emotionally detach without necessarily physically detaching. That way you still keep a bond. This can be tricky. One interesting book that I came across during the first time my H filed for divorce was called "Uncoupling." It's kind of an upsetting book in a way because it's basically a blueprint for how relationships "uncouple" or disintegrate. On the other hand, I read it with the idea of trying to do the exact opposite so that the relationship with my husband wouldn't uncouple. In other words, although I DBed, detached and GALed I also decided to try and keep the relationship with my husband from fully uncoupling while still allowing him "a lot of leash." Sometimes it's a delicate balance and you have to carefully consider where the relationship is.
There is no arriving, ever. It is all a continual becoming.