This really resonates with me, I was the first person in my family to go to university, and my grandparents had to work multiple jobs when they migrated from Europe in order to survive. My dad did slightly better, but both my parents only had high school education and worked blue collar jobs.
It does make it really hard to change your mindset when you come from this sort of background, when you've achieved more than anyone in your family and therefore can't really talk to them about your ambitions or career objectives.
It sounds awful, but sometimes I wish I had been born into a different family, with highly educated parents I could have amazing conversations with, who would encourage me to achieve and grow even more.
I find I constantly have a mindset of "I'm not good enough" and it's paralysing. I want to interview for the top tech jobs out there, like Google or Facebook, but my brain keeps telling me I'm not good enough, it's awful.