Arthritis Has Taken Over My Body. I Am In Terrible

Arthritis has taken over my body. I am in terrible pain. Ever day gets worse. My right knee is the worst. I had a knee replacement 12 yrs. ago. Never worked for me. I have prostate cancer and have to take injections of hormones to kill the testosterone every 6 months. I know I can't sutvive much longer like this, can u give me any advice?