I definetely understand that bro, long story short, wilhiem stientz was once the greatest til he met emanuel lasker then emanuel lasker met capablanca, then capablanca met alekhine, point is, theres always someone better than you as a over all player, dont get frustrated over that, but to get to the 2400+ level, no its not fucking impossible like people say it is, yes there is a huge difference in 2400 and 2700+ but to GET IN THE CIRCLE basically in the mix of all the grandmasters, no its not like you need to have a sky rocket iq, just hard work and dedication and the biggest ingredient BELIEF, and closed minded to negative people.
Those points are very important ofc, but talent is a big factor as well.
I haven't read the entire thread so maybe I misunderstand you, but from the last 2 pages it seems that you're trying to become a GM.
I don't think that's impossible if you are talented, so by all means chase your dream. If you're beating 1900's after one year of training, you probably are talented. Don't underestimate GM's though, they all have talent, they all work hard.
That's my point though, you need the talent. That guy at your club who is 1100 after playing for 20 years will never be a GM even if he trains his heart out.
But the OP was asking, I assume, can any particular person become a GM. Sure - possible, but unlikely. Sort of like asking "Can anyone become president of?" or "Can anyone become an Olympic class athlete?".
Well, the second example is an obvious 'no' as genes play a huge role in sports.