Went through pretty much the same thing, but for me, once wife 1.0 moved out, neither of us pushed to get the divorce done right away. I was comfortable in the house and wasn't in a hurry to move out and she was happy having health insurance.
So it took a few years. My kids had grown and moved out, so it was me, the cat and not much else to take up my eveings.
I needed a distraction. I was making good money (before this current mess of an economy) and all my time and money was used the way I wanted to use it for the first time in 24 years.
The first distraction was the Harley I'd really wanted all along. Bought a 10 yar old Ultra Classic. This is an instant gratification thing and I put 15,000 miles on that thing the first year. (course that led to a new one as I guess I'll be riding until I cant!)
Then it was the RV I'd wanted to build since 1994.
As I had a LOT of trouble sleeping from the stress, I used Van's sales DVD as a sleep aid along with over the counter sleep meds (and occaisionally a bit of Balvinie Double Wood Scotch!). Man, that DVD really worked well after about the 30th or 40th viewing! I could recite a lot of it if I had to! Kind of sick really!

But it was great motivation. It got to where I didn't make it much past the introduction of the models, and then ZZZzzzzzzzz.
Bought the tail kit, which I went through pretty fast, then I just ordered the rest all at one time. Built a lot in my garage and that really worked well to keep me busy in the evenings. Curbed the Scotch usage as well, which was good. I feared going down that slippery slope.
So for the above reasons, I think building during this time is a good idea, course you also have minor children to keep you busy, so that will help.
When we finally got around to getting the divorce done, I'd spent a lot of money I'd earned after 1.0 moved out, but as we were still legally married it was technically half hers, which worried me a LOT!
I think as was said earlier, that assigning a value to the project was difficult, so between that and possibly because 1.0 didin't want to see the dream destroyed, I was able to get the whole thing taken off the table before the big ax came down on the remaining assets.
Don't get me wrong though, I still totally got the shaft and will be paying the rest of my life for a divorce I didn't want.
So I still have the project. Hopefully it will fly next summer. 2.0 is a definite upgrade



and life is back on track.
So hang in there buddy! You can only control the way you react to the situation and that's all. Jump in and start work on your dream! It's a great distraction!