Ditto my DH.
One of the best things I ever did was to talk to an attorney. It was a flat fee consultation, and lasted about 3 hours. We went through all of our assets/ debts/ finances.... and figured out what the best, probable, and worst case scenarios were. Also figured out money saving things (like how to organize papers so that she wouldn't have to bill for the time, research, etc), mediators vs court appearances, custody... the whole shebang. It was utterly and completely empowering to get the whole process laid out in black and white... because I could actually PLAN. Do the "okay, how do I work with/around THIS?" while not being in the drama & stress of actually being in the middle of a divorce with my head and my heart twisted 6 ways from sunday. ESPECIALLY (for me, at least) having the 3 different scenarios laid out (best, probable, and worst) so I could really wrap my head around the whole process.
My DH DID quit drinking last year... but he still has major anger management issues plus (even though he'd been sober when I met him for over 8 years)... newcomer stuff... which is a PITA.
But because of the consultation I know exactly how the "formula" would split our assets... and I know that if I reach my limit... exactly how much to expect in minimal aid. I know that I would get the house, and that I would either need to lease or sell it (because I couldn't afford the payments on my own, even with aid), I know x,y,z.
I'm still on the fence. We'll see what happens. But I'm not scared any more. I know I can do it... because I've actually had the time and space and knowledge that lets me plan how.
I should add... I didn't tell my DH I went to the attorney... I went in secret, for ME.