The music of Bach is not something that, say, Barry Manilow could have achieved if he simply put in more hours. You can gather tinder all day and stack it like an expert, but without a spark, there will be no flame.
I used to fret over this problem a lot as a child. I obsessed over a book of saints, where the common thread seemed to be that these people had been different from the very beginning. Tiny Ludwiga could lisp the Pater Noster long before she even learned to say her own name; pious Edelbert would toddle away from his nurse every chance he got, only to be found once again sound asleep under his favourite spot, the tabernacle in the village church.
“How the heck can I compete with that?” I used to think.