I'm relatively new to typology, although I've been aware of it for many years. I was introduced to the four temperaments when I was in middle school, and found them fascinating. Reading through descriptions of the various types, I identified strongly with characteristics of the INTP. I took an online quiz at the time and was scored as an INTP.
Since then, I've re-tested myself at least once a year and have always gotten INTP. I've never taken an official test, but I'm very confident of my results. There is nothing in the description of an INTP that I don't recognize wthin myself.
What I'd like to ask the community is, can a person consciously change his or her type -- permanently? I'm currently attending university, and after graduation I intend to pursue a military career, ideally with a commission. I realize that there are many incongruencies between my personality type and my chosen career. I don't think that a prototypical INTP like me would make a capable leader in an infantry unit, or as commander of a larger group of men. I am serious about my future in the military, and I want to have a highly successful career with many opportunities after it's over. I don't feel that I'd be able to do that with my tendency to prolong indecision and to over-analyze situations. Being introverted doesn't help either.
I believe that the qualities possessed by ENTJs are ideal for military leaders, and I want to integrate as many of them as I can into my own personality. Moreover, I deeply admire the positive traits of ENTJs, and I'd like to see more of them present in myself, regardless of my career choice. I think ENTJs -- in general -- are most adept at directly dealing with the external world.
Is there any process for achieving this? Does the relationship between INTP and ENTJ bear any significance to such a change? It would seem that modeling my behavior after ENTJs would have the desired effect, but my intuition tells me that this won't work by its lonesome.
I'm eager to read your thoughts on this. Thank you.