Vicodin and muscle relaxant

I have taken the generic Vicodin, Hydrocodone, for 8 years for chronic pack pain. Along with the Hydrocodone, I take Soma, a muscle relaxant. I take them together, usually 3 to 5 of both a day. I know this sounds like a lot, but after 8 years, I am so used to it that it has become part of my every day. I know I am addicted to both because when I run out, I can hardly wait to get my refill. I have pain and I get irritable. My doctor checks my liver regularly and I have had no other side effects. I am surprised to read about those with constipation as it gives me diarrhea. I also sleep well on the medication. Mine is an unusual case as I have had surgery (Thoracic) and have been under both a neurologist and cardiovascular doctor's care the entire time. I pray that anyone taking this medication learns how to use it and not abuse it. It truly helps you to live a normal life, however it can become all-encompassing if you take too much.