You're in a tough situation, but it's time to man up.
Your wife has probably already hired the most vile divorce attorney she could find, and has probably already slept with him. She will petition to force you to pay her attorney fees and they (her and the attorney) will go after everything you own (not just half... that's too old fashioned).
You MUST find yourself a female divorce attorney, because only a female attorney will be able to develop the pure primal hatred toward another female (your wife) that will allow you to stand a chance in this fight.
In the end, you will be victorious in the same way a country is victorious in a long war: you'll lose a lot, take a lot of damage, but you'll be better off in the long run.
DO NOT hire a male attorney... your wife will probably sleep with him too, and then they'll all conspire against you.