Is it too late for me?
Short version is available at the end of the post if you don't want to read my life story.
Even though I grow up in a family where no one had higher education (mostly middle-school and a couple of high-school grads), I was always the best student in my classes but I had to drop out of high-school before I even started it because of the heavy depression that our worsening financial situtation caused me to get into (I'm not living in a western country so it was much worse than any westerner could empathize). I was a pretty avarage lower-class child with no interest in intellectual hobbies nor activities, with no ambitions or goals in life but with very-good grades.
After I got bored of video games during my 2 year depression, I started watching some philosophy channels on Youtube; and then started reading philosophy, psychology and literature books. I always thought I was smart because my grades were near to perfect but after reading Nietzsche, Plato, Freud, Orwell, Camus, Seneca and Marcus A I felt that an another dimension in my mind has opened itself to me and to the outer world - I understood that I knew nothing before and will never know enough. My understanding of the world, my perspective, my goals, my ambitions and the way I look at the world and things has changed. Then, I started to disconnect myself from my family, my old friends, stupid ideologies, religions, time-wasting gossips, arguments, tv-shows etc. I joined philosophy and discussion groups on Facebook; learned so many new things and met so many smart, intellectual people. Started watching philosophical debates and history, science, economics channels instead of sports or gaming. And, to my suprise, our financial situtation started to get somewhat better. After two years, as my depression and mental state got so much better than before, my psychologist encouraged me to start home-schooling. I did and graduated within 3.25 years without any help from a tutor or anyone else - just by self studying. Even though I had social anxiety for all my of childhood, now I don't have a bit of social anxiety in me. My interpersonal skills are like a goddamn frat boy.
After some of my family members saw my extraordinary efforts and growing intellectual knowledge, they started asking around for someone to fund my undergraduate studies; a manufacturer agreed to it for tax-cuts for his business. In 2023, I will take the university entrance exam and most likely will get into a target-university. But, my question is that... Is it too late for me? I will be 21 when I start to my undergraduate studies where most people start it at 17-18. I believe that I will be able to graduate with a GPA over 3.80 and very good extracurriculars; so that should get me into in a normal situtation but I will be 24 yo. To be honest, I'm worried and nerveous because I started to this journey with one goal in my mind; working in an industry that would be classified as 'elite', and currently, McKinsey is my only way to that goal.
Short Version: I will be 24 when I graduate and I'm worried that if I will be able to get into McKinsey.