Your success in life is dictated by the social connections you have and how good you are at maintaining them. When I was young I thought focusing on my education and working harder would automatically lead to a successful career, and while good academic performance does help, what’s far more useful is having connections who will help you out, either through referrals or just by being a source of information about stuff you didn’t know and it’s easy to have some social life in school or college without much effort, because everyone meets up at a single place, as an adult socialization takes effort, cause now everyone is away living their own busy lives and it’s not as easy to meet up face to face. This is why rich people like exclusive clubs so much, being able to be in the right social circles and having the ear of influential people will pay huge dividents. Also being a skilled liar is definately a very useful skill to have.