Its a conflict your having with yourself, such as coping with emotions and dealing with difficult decisions. Your self control is finding a way to resolve the problem presented to you in a difficult manner so its called and internal conflict. External is the opposite of it with having a problem with an outside source.
I would say it's a simile because they are comparing with using the word "like". They are comparing there howling to the wolves.
This is extravert. Extraversion is the state of obtaining pleasure from an outer world. They enjoy human interactions and they are enthusiastic, talkative and assertive. Extraverts like being among people. They like large social gatherings, such as parties, public demonstrations, and business or political groups. Therefore, they work well in groups. Extraverts are energized among people and they feel bored when they are alone.
