My heart goes out to you and my prayers will be with you. I too am taking care of my mom with stage IV cancer and my father with a recent heart attack and stroke. There are days my body and mind feel numb with tiredness, but you have to remember without YOU keeping yourself healthly you cannot be there to support your wife's needs. It's true there are people who are willing to help, and that's wonderful when it happens, but for the most part you're on your own. Do you have a church family? Faith is what is getting me through this and I pray you will find the answers you need. There may come a point she doesn't remember you, or things around her so cherish each and everyday, as tired as I am and as emotionally drained as I am -- I want to cherish this time as well -- sometimes, most often we aren't given second chances in these situations. God will not give us more than we can handle.