J.D.
A.,
I know how you feel. I have a 7 year old that has been this way since birth. She has the will of a iron fist. Drives me insane. I have tried it all. Now she is in 1st grade and causing more problems then I can say.
The school and my church both use Parenting with Love and Logic. I have read part of the book and it is very good but wasn't enough for my daughter. I have now started reading How to Parent a Strong Willed Child. I haven't gotten very far into yet but I can tell you so far sounds just like my daughter. I would suggest that you take a look at a couple of these.
Like you, I am a single mom. It is hard and when it gets bad, I do put her in her room and I go sit on my bed and just pray for guidance and patience.
There are good days and I cherish those. Hopefully for you it is just a phase your child is going through. Please try to get hold of both books and see if they help.
Keep up the love and you will get through it all.
Your in my prayers.
J.