Agree with sibling commenters here critiquing this for being an oversimplification- nature vs nurture is not a binary.
But even aside from the core of the argument, I find your phraseology oddly formulaic. It's ironic you're accusing the OP of having a "fixed mindset" when so much of your contributed "opinion" is clearly copypasted from books. I'd suggest opening your own mindset to forming a worldview of your own rather than following growth gurus so blindly.
I found your comment condescending: the tone assumes you have absolute knowledge and that the OP is immediately "wrong" in their approach. It's an extremely dismissive way to respond to someone asking for pretty specific advice.
So I addressed that. I didn't intend it as ad hominem against your character - I only intended to address the specific contents of your comment, so apologies for the guru comment (I just assumed you followed them since you were recommending their handbooks).
True and fair. My observations may be misguided- I thought them appropriate to voice regardless purely in the context of the condescending & ironic nature of the observations the gp made about the op.
You're overreading into a message typed into a forum. I've noticed mistakes in your post, but I don't then assume you're careless in every aspect. You could just be having a bad day, or English could be a second language. I don't know, so I don't assume.
But even aside from the core of the argument, I find your phraseology oddly formulaic. It's ironic you're accusing the OP of having a "fixed mindset" when so much of your contributed "opinion" is clearly copypasted from books. I'd suggest opening your own mindset to forming a worldview of your own rather than following growth gurus so blindly.