I admit I have trouble understanding the fixed mind set. If we were born with limited capabilities then we would know how to speak and would great doctors with a conversation directly at the hospital. We may need some time to get the muscles and the bones developed enough but that's about it.
The homo sapiens sapiens is a curious creature by nature. So not seeking new experiences, new challenges (remember dopamine triggering mechanisms...) does not seem natural. It kinda reminds me of dystopian societies like george Orwell's in 1984. I mean, do you know any child not asking questions, not trying to compete with friends, those are natural mechanisms to improve skills. So, to me, having a fixed mindset is more a consequence of the normative society we live in than a real psychological fact.
There are two main domains where you encounter fixed mind sets : school and work. That's bad because that's where you spend the most time. I've always tried to improve myself but when at school you hear your teacher say, "you are ahead of the other, let's wait for them" all day long that's kinda hard to be motivated... In enterprise when you say, "you need this, this and this, doing that will double your productivity", and they answer you, "that's not up to you to decide", "we don't do things like that around here", that's pretty limiting too.
So the question is, if you have a growth mindset does it naturally mean that you lean away from the norm ?