It took me years to realize that many of my physical ailments were cause from my mental state. I never connected the fact that I would often feel aches and pains while I was horribly depressed.
Few people actually realize that connection, seeking out medical attention which uses their money, time and patience to come to no conclusion. I read this really great article on it
It’s older but you can find a lot of material on it.
It’s really amazing just how crappy it can make you feel, it’s no wonder we don’t want to get out of bed and just sleep our days away. Who wants to be constantly sad and in pain? I know I don’t