Man this kinda feels like me, first I thought "anything is possible, just put your mind to it", but after encountering a crazy good programmer at my job I think differently.
I have a bachelor degree, 36 years old, and I feel like I have reached my ceiling.
I still think that I make progression, but it is so slow compared to some really good programmers at my job.
It sometimes makes me feel insecure, and I think of quiting my job, because it feels like I will never be able to be as good as others.
On the other hand, maybe I should just accept that this is it, it wont get any better.