For me it was "buy high quality pillow" because you sleep for one thrid of a day etc. I needed a new pillow anyway so I came to the store and bought the best they had. And it was ... ok. Like it's a fine pillow but my sleeping haven't improved really, it's basically the same. So I was disapointed :(
Finding the source of stress isn't normally easy. It could be compounded or masked with addiction or anything really. For me, large doses of psilocybin open the wounds to be viewed as symbolic representations. This is normally a bad trip and it's not fun, but has positive life altering consequences.