No matter how much we hate the bloody thing, pain is 100% normal. And essential. And effective.
The problem is that pain is unpredictable which increases our fear of it. We may be able to go to the gym for years and lift more than our bodyweight with no problems, but get home and pick something off the floor and that's when it hits us.
And everyone has a fear of pain, whether we care to admit it or not. But pain is there in order to protect us. We NEED pain.
The general day to day pains within our life such as postural pain, sprains, bites, etc are all related to changes in the tissues. The brain perceives that the tissues are under threat and so action is required in order to heal the tissues. And this is fantastic. It's just what we need.
And once something has healed we also store memories of what has happened in order to ensure that we don’t make the same mistake again. Which is why pain may be produced even when nothing has been injured. Your body is simply protecting you.
Now when pain is chronic* and is 'ruining' your life then it can be difficult to see just how it is helping us.
But the fact of the matter is that it hurts because the brain has concluded that you are in danger (This is more likely to be on a subconscious level).
The trick? To find out why the brain has come to this conclusion. I'm not going to lie to you, this can be a lot of work. But when pain is constantly dictating how you live your life then I'm guessing you've got nothing to lose.
*Actually I prefer the term persistent. Chronic gives us the impression that it will never go away. Persistent means it's a pain in the backside returning (no pun intended) but we can get rid of it. Just my opinion!