Weelll, I would say that for starters......
stay as busy and structured as you can possibly muster....
stay out of the house as much as you possibly can....hang out at the library or park or coffee shop or the mall...or go to a movie or visit girlfriends or put your earphones on and listen to uplifting music.
get a couple of recovery books and read them (in the other part of the house).
Also, make a list of the main reasons that you are separating and keep the l ist with you for easy reference at all times!!
If you have lived with misery this long...you can surely do it for a little longer....
I suggest sleeping in another part of the house....and no horizontal tango....
dandylion