What does Ezekiel 33:12 mean?

So, son of man, tell your people: 'If someone has lived right their whole life, but then turns to evil, their past good won't save them. And if someone has lived badly, but then turns away from their wrongs, their past won't drag them down. When someone does the right thing, that's what counts.' Ezekiel 33:12 - Modern Text Bible

(God is saying that what matters is the choices people make now, not just their history. Change is always possible, for better or worse.)