Crutch or Coping mechanism?

Confined. Restricted. Penned-in. Or am I? I feel constrained by my own constraints. I create them, yet simultaneously resent them. My sister has a particular dislike for personality tests, as well as the importance I place on them. I find it fascinating--the categorization of individual behavior, which ironically aligns perfectly with my personality. In the world of the Myer's Briggs personality types, I am an ESFJ. The portion of my personality which is, I believe, my distinguishing, yet most frustrating factor is the J. It stands for Judging. But, not in the traditional sense of judging--rather it insinuates that a J personality tends to function within the context of expectations or pre-conceived notions about life. As well, a J processes things in a very linear fashion. Unlike my best friend, who is a P (perceiver), I cannot make the distant or random connections in my brain that she can. I see black and white, while she sees grey. I frustrates me often, how I process and engage with the world. And I am not sure if it is because I am a J that I have latched on so heavily to this notion of my personality and am confined by it, or if it is that I am confined by it because I'm a J? Which came first, the chicken or the egg? I'm not sure if we'll ever know. But, it is maddening to watch myself through my own eyes and not really be able to alter my own neuroticism. Am I simply using my personality as a crutch for my bizarre behavior? Or rather, does it simply help me cope with the bizarreness? I'm not sure. I've run out of categories in my mind, I shall resume this ranting later...