It’s now or never if you want to buy a cheap ticket to go to the big rock festival. If you’re thinking of taking a career break, it’s now or never because you won’t get the chance again.

Yes, it's a common way to make someone feel better who's made a mistake and feels bad about it. Feifei 没错，通常我们用 “it happens to the best of us” 来劝他人 “别太纠结于 ...