What is the personality type of Mad Dog? Which MBTI personality type best fits? Personality type for Mad Dog from Talespin and what is the personality traits.
Mad Dog personality type is ISTP, not INFP.
The only thing I can speculate on is that you don't see the world in the same way as an INFP. INFPs are more likely to see the world as a series of abstract ideas and possibilities, and less likely to see it as a series of concrete things and facts. That could be the difference between having a childish, childish mind and a more mature, adult mind.
I wonder if you would be happier if you were an extrovert instead of an introvert? It's possible that you're a "strong" introvert, but that doesn't mean anything. Introversion and extroversion are not personality types. There's nothing intrinsic to introversion that makes someone more likely to be an introvert over an extrovert. Introversion is just a certain way of processing information.
You're right that your typing would not change much, but it would still change, just not in the way you think it would. The directions from all of your Extraverted preferences (like feeling or thinking) tend to go in the same direction, and your Introverted preferences are much more likely to go in the opposite direction than your Extraverted preferences.