I didn't always think of myself as an INFJ. The first few times I took the test, I resulted with being an INTP, which didn't make much sense to me. Mainly since they are considered to be rather emotionally detached and only logic-seeking.  
Over time I found that INFJ was more of a fitting categorization for me, mainly for the key qualities of hidden intuition and emotional depth. Adaptability/chameleon-like behaviour and contemplative actions were other tying elements into making my conclusion. Oh, and fascination with human nature and the big picture in general. Big one there. 
 I guess I'm on here because I'm curious about meeting people and learning more about personality types. I've gotten a bit more interested with Myers Briggs recently, and want to learn more. Get well-versed with it.