I'm in my 50's and have been coding since the 70's and still feel like my skills have not yet peaked. I learn new stuff every week. I am continually exploring

I'm in my 50's and have been coding since the 70's and still feel like my skills have not yet peaked. I learn new stuff every week. I am continually exploring and learning new stuff. There is a _lot_ to this programming stuff if you keep forcing yourself out of your comfort zone and learning new things. Oh - and I work in a startup.