Willfull 6 year old boy, on my last straw

While my 6yo BS is very strong willed, I say that God gave me him to prepare me for my 4 yo AS. You have to be consistant ALL THE TIME. Read all you can on natural consequences so you will be ready. One time letting it go and you will pay for it. My AS will test, test, test, take a few days break and then test, test, test some more. At first we chalked it up to his RAD. Then last summer they said he is completely attached, RAD no longer seems to be an issue and dx him with ADHD. The therapist then told me the challenging and strong will is just his personality. I about cried. Love him, but some days I have to take my own time-out. When days get really bad with him what gets me through is knowing I was a very strong willed child and survived (though my mother says there were many times she understood why some animals eat their young). ps - love the walking him to school idea, just be sure you follow through every time. If he is anything like my son, you will be walking a couple times one week, take a week break and walking a couple times again for several weeks before he gets tired of challenging that and moves onto something else. Almost forgot -- be sure if you can request teachers/coaches/etc you always do. (At least with my sons) they will eat a person alive that is not firm and consistent with them. Took us many tries to find a babysitter that can handle them!!!