Rafiki, acted as simba's really world representation of his superego. By pushing him to return to the pride lands during a time in which he was indulging in id satisfying behavior as an out cast with timone and puma.
"Remember who you are. You are my son. You are the lion king. Remember who you are" - Mufasa Lion King. This picture is so beautiful and is from the single most inspirational part of that movie! Seriously, watch this scene & try to not be moved!