I want to understand myself. It's not so much that my MBTI type is a part of my identity, as it is a useful tool for understanding my identity. I don't really get myself, and I'd like to.
What do you not understand about yourself? Your internal process of personality? How you view the world and why? What is it exactly that you would like to understand?
Piano, singing and poetry. A very little bit of fiction writing.
What is your approach to your artistic side? Do you think it is ordered and structured or chaotic?
It's not so much that I want to restrain the emotions, as I want to keep them from affecting my decisions. It's important to me that I make the "best" decisions, and I think that being emotional can interfere with that, for me at least.
While their is nothing wrong with your approach, I will play the Devil's advocate for a moment: the best approach may not always be the most logical one. I have had to deal with this myself as well: I try to not let my emotions affect my decision making process. I was told by someone much wiser than myself to let emotions come into play more (though try it out with minor things to start if you are interested; just consider the possibility).
I only discovered MBTI in January. I joined the INTJ forum and, unlike here posted, a lot on it. I almost immediately questioned whether I was T or F, and there were a few threads about it there. The participants of INTJf, however, were able to convince me that I was "T". In retrospect, some INTJs would be biased towards convincing me that I was T, and the same might apply to some INFJs and F.
So, really, it's been a question that's never gone away since I've known of MBTI.
I don't want to push you into either camp (INFJ, INTJ, or any other for that matter). My only wish is to ask introspective questions that will help you think about the issues with different perspectives. Sometimes a change in perspective is all we need to realize an important answer.