Can the mind help prevent stress and other illnesses? How much of an effect does stress have.

How can the mind prevent stress and prevent physical illnesses. How powerful is the mind. Does stress induce illnesses, or make you more susceptible of getting sick? If highly stressed, can this increase the chance of getting covid 19? Is there different ethnic groups that believe the mind can heal your body? What are different beliefs that Native Americans have to deal with stress or illnesses.

Please intensely research about these topics and other similar topics you think are important related to stress.