the be-all and end-all (of something)

成語所屬單字be

the be-all and end-all (of something) — 慣用語

1. The most important or essential part of something.

1.慣用語
釋義

最重要的事

The most important or essential part of something.

例句

Winning the championship is not the be-all and end-all of his career.

For many, money is the be-all and end-all of happiness.