having thought about it for 4 minutes, i am going to set you up as an ISTP.
i know this is a desperate attempt, because you really don't exhibit any full function in a clear manner, but:
1. you don't have many Se traits, but you do take things very literally, and its reasonable that your life hasn't being the most enabling factor in regarding to Se development.
2. while you don't have the high Ti constant-questioning thing ISTPs tend to do, you do seem to be using Ti when you talk about your studies, and you display the same sort inferior-Fe, or what i call "frustrated Fe in a box" syndrome that you often see with IxTPs.
I always agreed with ENTJ. You definitely have Te down pat.
'Consciousness is not simply a sensory-perceptual affair, a matter of mental imagery, as the contents of our mind would have us believe. It is deeply enmeshed with the brain mechanisms that automatically promote action readiness' - Jaak Panksepp