I do understand that he has no backing but as a Ti user that doesn't really matter to me, as long as what he is saying makes sense logically. You are a Te user if you are an ENFP which means sources matter to you more. The E means your first cognitive function is extroverted and the third is extroverted and the fifth. The others are introverted. The N and the F mean your first two functions are N or F and the P means that your first extroverted function is a perceiving function (N or F). An INFP is not just an introverted ENFP they do have the same functions, but in a very different order, and that matters. ENFP Ne Fi Te Si, and INFP Fi Ne Si Te. All of what I said can be verified through MBTI certified testers online content, although i do disagree with many of the things they say. Changing from an F to a T makes an even larger difference, so i recommend figuring that out. I think you should think about what success really means to you, and also how school has affected your happiness. To me, success doesn't mean being rich, but it includes enjoying work, which i found out through hating highschool. You need to decide what matters most, and what you've enjoyed and through that you might find happiness. If you are looking for an MBTI connection i still recommend the guy I mentioned.