What makes ENTPs feel they're destined for greatness, and how do they deal with the fear of mediocrity?

Can embracing a loner lifestyle really lead to stronger self-love and independence, compared to seeking constant social validation?
Do you notice that your friends from different countries have different rules about when it is okay to interrupt someone who is speaking?
Why is it important to become a positive and enthusiastic person, and how can it change your relationships with others?