How so? Is who you are as a person one who stagnates? To me it would seem you have it backwards. Being a 16 year old shitty driver and pretending that you have nothing to learn about driving would be against growth. Being a 16 year old shitty driver who knows they are shit is being yourself. Hopefully wanting to get better is a part of who you are, so you do that too.

Being yourself is two things. Being honest about your knowledge, capabilities, and goals. Set your own goals according to your own desires and needs, not those forced on you by others.