...to stop getting bursitis?

I am tired of my shoulder, arm, wrist and fingers being sore for months after a bout of bursitis. I last had it after a lovely vacation in July where I carried a cooler full of beverages repeatedly at a music festival, it stayed through August and my next vacation when I had to always have someone with me to pull the starter cord for the boat motor because I couldn't do it. It lingered after that and I am still waking up with sore shoulder, arm, wrist, finger joints, etc. If I sleep on my right side it gets worse and I wake up with no feeling until the pins and needles start and stay for 2-3 hours. I have no strength in my right hand, it hurts when I squeeze it and I have had enough.

Anyone fought this and won the battle? If so, what did you do besides the usual strengthening exercises afterwards? Is there any treatment yet that actually works besides curling up in a solid immobile ball when you are in the absolute screaming pain part of bursitis?