What is the best way to explain the role of the ego?

the ego controls full consciousness.
the ego will keep you on a morally correct path.
the ego is a mediator between the superego and id.

Afew buddies come over to your house to hang out. they notice you're struggling in school, perhaps you have to rely on to pass your class, but you can't absorb the knowledge. they could positively reinforce getting a tutor and working with you, dedicating more time to the areas of struggle and less on hanging out to better yourself.secondly, say you're the victim of bullying. you're afraid to tell an adult because of possible repercussions from the bully himself. your friends encouraging you and pushing you towards telling an adult for your safety is another example. 

Your doctor will speak with you regarding your concern for all the the above he / she will maintain regular checkups with you regarding the yes answers you answered in the questionnaire