Recently I'm started to doubt if I'm INTJ or ISTJ.

I tried researching on the internet but all I found was stereotypes. And other than stereotypes, I really struggled to differ one type from another. A INTP friend told me that I'm either a Si-dom or have a really fucked up Ni-Te.

I'll lay down some facts, anyway, here they are:

I have somewhat good memory for somethings (sometimes, oddly specific, like remembering precise dates for really stupid things that happened if they had an impact on me), can even recreate some feelings I have felt in the past, I'm also very interested in history.

I have a good planning capacity, and can easily follow steps to accomplish something. I like to know what can happen and plan on that. I don't have any of that "respect for authority" bs that I see ISTJs being related to (Or SJs actually).

I like things to be simple and specific, I don't like people that simply say something vague and expect me to figure it all out like I'm a clairvoyant.

I can be very stubborn and hard-headed sometimes, and pride myself in my disposition to sacrifice things in order to achieve a goal I deem necessary for me or someone else I care for. If I have a goal in mind, I'll probably either give up completely or see it to the end I want no matter what happens.

My ENFJ father complains I'm too dead-serious and barely expresses emotions. And I constantly bash heads with people because I want some things to be done my way, or in any way I know it WILL work, despite being other ways of doing the same thing. I lay a course of action for me and don't like to change on a major scale.