There is a very powerful demon blocking my wifes love for me, and causing her to want a divorce.

Please pray in Jesus name that God will cast this demon away from her, and restore our marriage.

Sweet soul, until a few days ago i was fretting and crying my eyes out for my prayers but then i came across Andrew Wommack's ministries. Take a look at that and you will find a new perspective and the answers to your questions. It is the most positive message that God can send to us. Try to go through his words and you will find the difference.
http://www.awmi.net/extra/article/better_pray
Check out other interesting links in it too.

God bless you!!
Sudhaa