
I'm sorry to hear you're in constant pain.

It took me many years to learn how to decrease my chronic pain to where it's manageable.
First, you have to put yourself first.
Until you do that, nothing you try will work very well or for very long.
Most ppl (myself included) felt that was selfish, but

it isn't.
If you need to keep a book as you go through this for yourself, do so.
Taking care of yourself is not selfish, it's good, and good for you.
If you can't or don't take care of your needs first, then you aren't able to do anything or be there (really) for anyone else, nor can you enjoy them.
I know you have been on this road quite a while, and you aren't stupid nor dumb (((hugs))) so don't take anything I say in that manner, okay?
I know when I was in high constant pain it was difficult to think "straight" in any fashion, and needed to be told and reminded of truths often.
In that book, or on a paper, computer whatever, list your needs. List first your true basic needs of: food (eating properly is very important to pain management...) water intake (ditto), restorative sleep, and rest.
Address those issues, and work at finding a routine that suits you, that helps you etc. (REGARDLESS of what anyone else in the world may think or say, you must focus on yourself.)
Once you have the routine set in your mind and you are working on that ... begin adding in one at a time, things that you think may help (this might include alternative health such as herbs, meditation, etc) but for those basic needs.... focusing on eating healthy, restorative sleep.
Make a list or such that tells you how you can facilitate those goals (setting alarms to remind you, posting notes around to remind you (or tel others? taking baths, and yes, going to the pool!) etc.
The above took me years, but hopefully you can begin to get things under better control sooner. There's more to add ... and you probably already have a list of things that help you now. Be sure to write them down, even though you "know" you won't forget them.
Mind over matter hon. A bit of self-hypnosis can even help to not feel the pain so severely etc.
Adding such things into one's life when in pain seems overwhelming, I know. Have to have faith in the end result.