It's really hard to decide exactly what I would do... but...while I am dreaming.
First, I would get my family health insurance!
Second, I would publish my own book(s) and donate a large percentage of profits, if I made any, to the causes they are directly associated with (suicide prevention being one of them!).
Third, I would buy (completely paid for) a beautiful but very humble home with a heated pool so I could swim and take care of my body and mind. (fibromyaglia and depression)
Fourth, I would make wise investments, go back to school and put money away for my kids (education, wedding, etc.)
Fifth, I would make a serious contribution to a charity, but it would be so hard to decide which one, more than likely something to do with suicide prevention/mental health issues, but oh my gosh, so hard to decide.
And since 5 is my favorite number I will stop there! =)