hey give your self a break you can do this, and in your own time. Small steps lead to big rewards.
there are many things to help with conditioning, hypnotherapy, youtube videos, rtt, just google it.
you can rewire your mind, rtt has helped me do that : )
when my pain was at an 11, I would keep busy, it was soooooo hard but I knew I had to show my brain I can walk I can ride a bike, it it persisted for a long time but went down slowly, I got stuck at one point so I had bio energy therapy which made a lot of pain go and I still have it but I still use sarnos work because I know my subconscious is scared of the world.
Give your self little goals to reach, such as standing in the garden for ten mins, or one yoga pose evry few hours. your persistence will prove to your brain to shut of those pain chemicals.
I feel you pain I do, I tried to give up a few time but now im glad im alive and beating it. its up and down all the time but I believ when we get there we will feel so strong and powerful, feel free to message me if you ever need support x