英语厉害的进来，，，。。

face it sooner or later

You will face it sooner or later

You need to face it sooner or later.

You have to face it sooner or later.
这里想表达出来一种无可奈何的样子，所以用have to.

如果是劝诫：
那就是：Take the pill like a man.

如果是警告，我觉得最贴切的是：
you will pay，one day.

you will pay for it in time.