I mean, flowery language aside clearly there are plenty of circumstances when ignoring constraints and doggedly pursuing your goals will definitely lead to failure. We don't live in a universe where willing something makes it so, no matter how bad we want it. To achieve things we must have a healthy mix of modeling our external universe and and basing our decisions on that vs. ignoring that internal modeling process and just giving it a go.

But none of that fits in a poem, so I get it.

I guess we lost that sense in modern life. But we used to be more acquainted to risks and venture before. Nowadays we can't think about risks precisely because we don't know our limits.