It's a very unhealthy mixture of chemical imbalance, and self loathing. They compound each other. Our brains become so used to the excess endorphin production from the opiates, it stops producing it on it's own. When we abstain, it takes quite a while for things to get back to normal. So we have THAT going on, and we can no longer avoid the fact that we have destroyed our lives, and caused pain for our loved ones. Another reason it is hard to quit... Just the prospect is terrifying for any addict.
