What it we all took time to put down our responsibilities? During an asana practice, put down the weight of "having to do it all", of thinking everything will fall apart if you simply take a break and allow yourself to simply be in the moment.
When you do this, notice how the shoulders relax as the blades slip down the back.
Due to gravity, our most typical actions, and tension of feeling the heaviness of the world upon us, many people carry their shoulders in poor alignment. Release the tension, watch your actions, strengthen what's weak, and stretch what's overly strong or tight.
It's all about balance.
Properly aligned poses to strengthen the shoulder girdle: