one of my closest friends and i are very similar in terms of personality -
smart, self-aware, but also laid back possibly even to the point of laziness. it's arguable that he's even more laid back and lazy than i am.
we are the same age.
he failed his a-levels, and got a very junior role, paying basically minimum wage. after a year, he decided to re-sit his a-levels, and ended up going to uni 2 years after me.
he went back to the same job after uni because it was easy, and i found a grad role. over the next 10-15 years we both progressed relatively slowly but steadily.
we both decided around the same time to do a professional qualification, and both achieved this (him a bit more quickly, because he lived alone at that time, whereas i was married with children).
since achieving our qualifications, his career has fast-forwarded drastically - he's basically trebled his salary and is now at junior director level. mine has continued to progress steadily - maybe a little more quickly than previously (i now earn about 50% more than i did pre-qualification).
we've basically had the same number of different roles since qualifying.
the only real difference between us, is that because of his panic failed a-levels job search, he happened to land in a pharma company, and so his industry experience has always been in pharma. i am in finance/accounting.
he earns double what i earn, because there are very few of him, but there are thousands of me.
i absolutely do not begrudge him what he has - he is a good friend, a good person and i value him greatly.
it does however chafe slightly, that through shear chance at 17, with less effort, he's reached a level that i likely never will.
i acknowledge that i could absolutely have reached a similar level, but it would have taken me so much more time and effort, and would not have allowed me the time and space with my family that i have enjoyed.