sore knees and shoulder

I've had cronic tendonitis in my left knee forever, classic IT band problems that makes the outside of my knee very sore. I'd learned to sort of work around it and be careful running, especially in the spring after not running all winter. But then both knees started bothering me at the top of the knee caps, although they didn't really bother me skiing so I continued to pretend it wasn't a real problem. Same with my left shoulder. It was bothering me lifting weights, but not skiing. But by the end of the ski season last year they both started bothering me skiing so I could no longer pretend. I went to the doctor and the xrays were normal so she told me I was just VERY tight and needed massage or yoga or something to loosen up. I went to The Fix Studio for some massage and it's helped a ton. I also got a foam roller to roll my legs on and am trying to stretch more. My knees are no longer bothering me and I can run as much as I want to now and the shoulder is much better, but still needs work. I can lift weights without pain but it's not as strong or stable as the right side. Last winter my legs were sore and achy a lot and I would wake up in the middle of the night with achy legs, but no more. I can get out of bed in the morning now without feeling like a stiff old woman. I think I've gotten my legs to the point where I can keep them loose enough on my own through rolling and stretching and will do a few more massages to hopefully get the shoulder to that point as well. I guess that keeping the muscles loose is increasingly important as we age. I think I've learned my lesson now and will take the time to keep them looser since it seems that I won't be able to keep skiing pain free if I don't!