Poster probably won't change even in ten years, see research by Dweck. Fixed mindsets are a powerful negative thing. I salute you for believing in the right thing, a growth, malleable mindset supported by modern neuroscience and neuroplasticity!

I don't doubt I will change, but his or her comment was implying people can radically change and do a complete 180. In my experience in life so far, that almost never happens and I was asking for famous examples.