I don’t believe in this test but setting that aside, on the P-J axis, I think I am a J. I always thought P, because while I like having an idea of a schedule, priorities I honor, and goals I fulfill, I then like to violate that schedule according to how I feel. I like the freedom to shift it as I see fit, or take things in the direction they lead me. I am internally motivated and do not like goading.
I notice, though, that I am happier after a decision than before one. “Keeping my options open,” sitting with too many open variables, makes me anxious. I tend to know what I want, and when I make decisions that to some may look impulsive and could not be well considered because they were quickly and easily taken, and the decision is freely taken and I am happy with it from the start, I find I am happy in the longer term as well. Also, I can make a plan and remember to follow through, without employing any coercive mnemonic devices.
All of this makes me think I must be a J, even though I feel like a P. Or perhaps I am a P with skillz. I do not know. Perhaps I am simply on the cusp. If it is work, I am J, although I can improvise well on teaching and course planning and in some ways prefer it, have better ideas that way. If it is play, I am P, although I will make sure we get to our planned campsite or if we aren’t going to, we get to one that is also good and that allows us to do some of the things we came to do.
What do you find? Are you P or J, and how can you tell? (I think most academic advice is for P-people who need some J-skills, and that I either am J or have the J-skills, so that the insistence on gaining extra J-skills seems beside the point.)
Axé.
coldhearted scientist وداد 
All of those preferences are how you’d conduct your life if left to your own devices. I test as an extreme P but now I wonder how much of that is due to my childhood where my parents would routinely upset and frustrate any plans through their own whims, inaction & disorganization, especially my dad. Work was only partially to blame.
J = judging and P = perceiving. Scheduling/organizing is just one of the ways these tendencies manifest, probably a fairly minor way, actually. What you show to the outer world, and how this relates to your own sense of self, depends on whether you are introverted or extroverted. If you are ENFJ, then you will show the world your judging function, which in this instance is Feeling rather than Thinking: what people will see is how you feel, and your thoughts are more likely to be interior, private. If you are ENFP, you will show the world your sensing function, Intuition. I’m going to say I’m ISTJ, though I’m sort of middling on S/N and J/P, so my dominant function is introverted thinking, but what the world sees is extraverted sensing: I appear to be a nitpicker, not to put too fine a point on it. From what you write about your interactions with other people, it seems as if they do see you as a feeler but your auxiliary, introverted intuition/abstraction, is how you see yourself.
Hm. I just don’t know. I’d like to feel free enough to show the world intuition, but in the US I get accused of coldness and introversion for that, so I go abroad when I can to be more myself. ?
*** The psychotherapists I’ve had all see me as Thinking, not Feeling. So did my mother. I see myself in almost all of the type descriptions, and this is why I do not believe in the test.