Pain on shoulder blade. Please help diagnose the problem?

I'm not sure how much time you allowed for physical therapy, massage therapy, or chiropractic care to help you, but I do know that none of them are a quick fix and will probably take at least a month's worth of therapy or care for you to be fixed... Especially after letting it go for over six years. Your muscle memory will automatically go back to where it's been for so long until it is "rebooted" and taught to be correct.