The arm was built to have an active sense of axillary (scapular) grip. This is where we organize the movemeant. Not for gods sake the shoulder.
Try it! It’s natural.
Revelation! If you do it will feel like revelation.
The revelation is just the facticity of your own skeleton–your own anatomy. It is eager to meet you. You are old friends.
The revolution is this new and deeper sensation of structural stability, competence and flow. This is a synergistic awareness of grip in the scapula and hand, The synergistic grip is in the armpit and the hand.
Train like a Bodhisattva.
The scapula is shaped like a grip. It has 5 intrinsic muscles that all wrap around the shoulder joint like fingers. These create the rotator cuff and provide stability and centration to all arm movements. The grip in the scapula is the postural foundation to the grip in the hand. Feel it the next time you want to try to organize the shoulder.
This is where that control comes from, not the shoulder itself, which is much less articulate and sensitive. By focusing on this structure the shoulder will self-organize. By focusing on the shoulder itself you will reinforce the imbalance.
The shoulder is very superficial. The scapula and armpit are very deep. Where do you think postural control comes from? Where do you want to put your intention, on the easily visible but very superficial shoulder that is complaining with pain? Or on its foundation–the whole rest of the scapula, which controls the it?