If your employer is happy with your performance then you are probably "good enough" as you say.
However if you truly do always want to be improving your ability as a software engineer, then you are in luck, this field is so vast and deep that you can easily spend more than a lifetime improving! Finding out how and measuring it is another matter.
However if you truly do always want to be improving your ability as a software engineer, then you are in luck, this field is so vast and deep that you can easily spend more than a lifetime improving! Finding out how and measuring it is another matter.