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.
It's true, comment boards reward the "oddly formulaic" - cliches and well-worn passages carry extra weight.
They also lead to weird leaps of illogic, like your assumption I follow any growth gurus at all!
Happy to have a longer conversation offline if you'd rather address a man instead of a strawman.
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).
Whether you blame another, view some traits as faults, idolise some concept or are blind to some thing, all are appearant in your writing and speech.