I think you misunderstood (and my experience alignes with OPs).

It is not about trying hard. It is not about working long hours, giving your best, persevering... it is about finding things you enjoy doing, context in which you shine, people who appreciate you. When a person is given a chance, they will try hard - not because they should, but because they enjoy it.

It doesn't always work and sometimes you need to just push through. But mostly, I can't imagine working hard at something I don't find joy in.