A remarkable person is impressive even when they are young,

rather than doing nothing in their youth, wasting time, having no advantages, and only becoming impressive when they are old. When young, they are a small waste, and a small waste becomes an old waste when they grow old.

No matter how late-blooming someone is, they can't be idle when they are young,

they must be accumulating knowledge, connections, experience, resources, funds, unique advantages, and professional skills...

The reason why they didn't achieve astonishing results when young is simply because the opportunity to change their mindset and the platform belonging to them had not yet arrived. The experience accumulated and external pressures were still insufficient, and the situation had not yet undergone a qualitative change.