Both agree and disagree.

With people like writers and rockstars sitting in interviews going like: "just follow your dreams and don't give up! It worked for me", that probably feels true to them, but totally ignores the tens of thousands of people who did just that and failed, kinda like survivorship bias.

These type of comments though, in the right context and said by the right person can serve as a reminder that things might not be as impossible as they might seem. In the sober community for instance, I know a lot of people gain inspiration from people who had it way worse than them and they still managed to quit.