Say what you will, call it nonsense, as for me, I know I've heard the term INFJ before, referring to the whole personality-type index pioneered by Carl Jung. View it how you will, but from what I've read of it, it does make sense, it explains its share of why I have succeeded and failed at a lot of what I have done. Doubtless if I hold fast to some of the concepts herein, it will be part of the difference made in me. There's probably a lot of good information on the web, but these are about three of the best sources I've come across thus far.

http://www.personalitypage.com/INFJ.html

http://en.wikipedia.org/wiki/Myers-Briggs

http://www.personalitytype.com/types/infj.html

If you're still inclined to think it's all a load of crap, well, admittedly, as we all know by now, there HAVE indeed been other factors in my life, and I still do have to do a bit of consultation with some REAL experts to see if this is the kind of information worth paying attention to. And as much as I think about it now, being a professional car-guy was an exercise in sheer will. I got my first job as a mechanic because I pounded, and pounded, and finally broke through that employment wall with the help of a dealership general manager who happened ALSO to be ADHD; he understood me, what I wanted, and was willing to give me my shot. Was it always the best being a mechanic? If it was, I'd probably still be doing it today. As it was, it had its share of ups and downs, and ultimately just became the total non-option. As is, this makes more sense than anything else has recently, so despite the fact that it's more work, if it's worth listening to, at this point, I'm all ears.