Hey Will, how are you doing right now? I'm familiar with a few of the problems you have. Years ago I was to enthusiastic at the gym, and overloaded my shoulders. Have had problems in shoulders, elbow and pulses ever since. But I always thought my problems were physical (they were for a certain part), but I found out that stress was a huge factor as well. Last winter was not so good for me, I was very stressed at school, had my computer business, and my forge, things going bad with my girlfriend etc, and all that gave me a lot of pain in the neck. This pain transferred to my elbow etc. I had a therapist pressing somewhere at my back, and I felt it in my bycep tendon.... Pains can come from far. Anyway, what I wanted to tell you is, make sure you don't work too hard, giving you mental stress. People with a lot of (work related) stress, won't get old. I cut down on a few of the things I was doing, and now I'm focusing on bladesmithing, I'm happier and the pain in my neck is gone.
I hope this will help you. Blacksmithing is a killer job when you don't mind your body. I was always thinking I could do any physical thing to my body, but from now on I'm very careful, and I plan all my activities.
Johan