are the things that your wife is complaining about the same things she has always complained about? not doing your part of housework? not helping with the kids? not being able to support the family? it sounds like she has been put under tremendous pressure by you, to the point that she feels like a single parent doing everything.
if some of that rings true, i would immediately concentrate on finding a job to help the family financially. i would immediately start helping around the house and with the kids. but only do it if you are doing it because you love your wife and you understand that is what she wants from you. don't expect anything in return. just do the things that she has been complaining about without having being told and be happy doing it because you know it makes your wife happy.
