Zeus, many here have needed an antidepressant to get through this phase, don't be ashamed to ask for it if you need it. Or at least take some B vitamins (including methyfolate), SAMe, and/or St Johns Wort. Also exercise is an effective antidepressant.
Your attorney should be able to give you an idea of what is a reasonable settlement in your state. The courts can mandate a professional evaluation of your wife to see what she is capable of earning.