This is an important point I like to mention to people. Thinking back to old code you wrote and how you would choose to do it better than you originally did it

This is an important point I like to mention to people. Thinking back to old code you wrote and how you would choose to do it better than you originally did it a sign of growth, and if that stops happening after a certain point, it's a sign you've stopped growing. Given that the best programmers in the world still don't write perfectly bug-free code, I don't have any illusions that there will always be plenty of room for me to continue improving as a programmer, so I consider having those thoughts to be an unequivocally good thing. I'd honestly be a bit wary of anyone who didn't think they needed to learn or grow any more as a programmer!