Pain can be staggering if you aren’t equipped to handle it, because sometimes it isn’t just physical. It’s a mental state which can migrate to a physical state, causing much distress if you do not know how to manage how you think.
We can counter most of what how we think negatively with a positive but I’ve experienced personally such overwhelming negatives that it altered my chemical state. It could have been disastrous but I was equipped and sought help outside myself, I found ways to make my negatives positives. Small ways initially, insignificant things.
Whatever makes you happy and fires your brain use, as long as you aren’t creating more negatives for you or others.