Everything's going to be okay.
You really really really aren't as smart as you think you are.
Wisdom is realizing today how dumb you were yesterday.
Take care of your back.
If you have good shoes and a good mattress then life is good.
Try napping. I know it seems like you're wasting your weekend, but seriously you should try it.
I beat the original dark souls without realizing there were different weight thresholds for rolling. I fat rolled the entire game. Also didn't realize boosting vigor was important for hp. I did 99% strength/stamina and only as much dex as required to weild my weapons.