Do not move out of *your* house. Doing so puts you as responsible for leaving.
During the settlement, ensure you keep all of your pension.
If you have kids, do not simply let them live with her. I've seen many blokes crippled by Child support.
Have a google around for mens divorce, as it can be sobering reading how many men get screwed over during them, and whilst I'm lucky enough to not have gone through it, a lot of friends have.
And sympathies to you, but now is the time to be proactive, and smart, you can wallow in pity later (sorry!). if it helps at all, every bloke I know that has gone through it has come out better at the other side.