Overall I guess it depends on what kind of treatment & self care is being done.
Improper treatment can be a big negative, but you have to try things to see what works for you. Then be consistent with it.

But it can take a long time, for me 2.5 yrs to get past the worst of it - I 'm guessing about a year of that was delayed & wasted due to work comp system.. but have to jump thru the hoops..
I was only starting to learn about TOS then too..