It's probably worth mentioning that the MBTI, at least the way it was explained when I did it, is meant to show a preference.

The example that I was given was clasping your hands together. If you interlock your fingers to clasp your hands now, you'll do it in a particular way, one thumb on top of the other. Now, it's perfectly possible for you to clasp your hands in such a way that the other thumb is on top. It doesn't feel completely natural, but it's possible.

Preferences, depending on your energy level or mood, etc, can alter.

Personally, I use my MBTI result (INTP) as one of many reference points when I find myself getting frustrating for no obvious reason, or just as a way to understand that other people have basic motivations and preferences that can rationally differ wildly from my own.