Myers Briggs Type Indicator. If you’d like to take a test to find out what your letters are, click HERE. I took the test years ago and found out that I’m an ESFJ and the Hubby is an ENTJ. And we’re raising an INFP. Sweet Jesus. Here’s the gist of the letters: E/I – Extrovert/Introvert S/N – Sensing/Intuitive (How you take in information) F/T – Feeler/Thinker J/P – Judging/Perceiving Basically, Noah is an introvert who is very intuitive and feels very deeply but could really care less about anything organized. And for this spreadsheet-lovin’ momma, that’s just not right. But, we absolutely adore him and believe that he, in his INFP world, will bring just as much importance and joy as any ESFJ or ENTJ would. We know he’ll be a world changer for Christ. If you know what your letters are, do share!