So my Dad's an impressive guy, at least to me. Dropped out of high school after getting into an argument with a nun about divine authority, had a kid (me!) out of wedlock, married my mom and joined the military to provide, had a moment of self-reflection when child me did some math with fruit, did night school to get his high school diploma, after several deployments and changes in trade got a four year degree done in two years, became an officer, rose through the ranks and is now retired from the military, doing civvy stuff that protects the rights of servicepeople under the law. Beyond all of this, he is always trying new stuff: baking cookies, making his own clothes, repair on all sorts of shit, wilderness stuff, writing, painting, drawing, programming, photography, Qigong, studying philosophy - the list goes on, to this day (he's currently on a motorcycle repair kick). I basically watched this guy transform from a disappointed, angry young man to a character you could find in a Heinlein novel and say "Jesus, there's the competent man trope, right on time".
With all of this in mind, what sticks in my head is what he said when I did some bogus (probably) IQ test as a kid and ran up to him with a good result: "IQ is just a measure of potential. It's what you do with that potential that's the important part". Whether I've lived up to that idea is a separate question, but it still comes to mind these days.
This is also coupled with memories of near blows/fist fights over stupid shit growing up, but that's also offset by watching him make a real effort to learn and account for/manage his temper. He's a remarkably chill person at this point.
Love this guy, he is a rock fucking solid dude.