List your friends' Myers-Briggs types and see what patterns, if any, that says about your type.
That's my list of my closest friends. And the results (you don't have to do this part if you don't want to, but I thought it would be an interesting experiment):
7 ppl are extroverted; 7 people are introverted. (coincidence, though Freud would disagree)
Highest Temperament = NF - 9
Second Highest Temperament = SP - 3
Lowest Temperament = ST & NT - 1
Highest Number of Same Type: INFJ - 3
Lowest Number of Same Type: Tied among INTP, ISFJ, and ESTP - 1
Note: This isn't meant to be a exhaustive resource for determining what types of people you associate yourself with, just to give you a rough estimate. I only listed friends of mine that I know their Myers-Briggs type and who just happen to be my closest friends (coincidence?, lol). It's rather interesting, because the one 1 ISFJ and 1 INTP would have to be my closest closest friends. Anywho, I knew it was going to be flawed, but just decided to throw in some fun for the forum. I would like to know all of my friends' types at one point and then maybe then I can get more accurate results. Till then, this will have to fare.