[ta_donk_gt]

I agree with this overall. It is a long road to significant improvement, with the occasional setback (sometimes way back), but taking charge of this yourself is the only viable path for the long term.

One disagreement, though...I probably wouldn't do any overhead lifting with a shoulder impingement. But do research on exercises to strengthen the current injuries you have, and work into more general weight training over time. My two cents.