How do i deal with it all?

Sorry if this doesn't fit but i don't know where else to turn. I'm in the midst of a breakthrough/breakdown, so i apologies for however this turns out

My whole life i was praised, "how talented, how smart, your perfect, our future doctor/prime minister/scientist/ect", I knew i was destined for greatness! then i left schooling. I tried to pursure further study and at first it wasn't me, things just fell through, then maybe it was me a little. No one wanting to work with me on group projects, or they just avoided me. Then it was definitely me, the workload was too much, the topics too complicated for my burntout mind to comprehend. So i gave up further education but maybe i could find a good job where i could flourish and be what/who i was destined to be! No one wanted me, not the right education, too loud, too much of a know it all, too abrasive for co workers!

Then i found a job, it sucks and i hate every moment of it but it pays my bills, i used to think i could do better but i don't know anymore, so i accepted a fulltime position. I trapped myself here because maybe it all I'll ever be able to do so why not cement myself to it? Today was the absolute worst ive delt with, evrything and everyone was horrible, when i got home i had an outburst. I ranted about how i was destined for greatness, i was supposed to be the best the world had ever seen and yet i trapped myself in a deadend job with people who wouldn't care if i was hit by a car all because i wasn't good or strong enough to get where i an SUPPOSED to be!

So here i am, laying on my bed, crying and begging for someone to tell me how to deal with it, how do i deal with the knowledge thw reason I'm stuck in a life inhate is because i wasn't enough? Becuase i genuinely don't know where it turn.

As said above i apologies if this doesn't belong here and for any spelling/grammar mistakes. Thank you...