Do not push objects instead try pulling them towards you? In this way, you will exert less pressure on your shoulder and more on your arms and avoid a chance of injury.
If you have suffered from a broken collar back at some time in the past then take care not to exert too much pressure on the injured region.
Exercise your shoulders. This will strengthen the muscles around the region and slow the process of wear and tear.
Avoid slouching on the couch for a long time by exerting pressure only on one side of the body. It often leads to a frozen arm.
