A New Year's resolution 就是新年决心，希望能在未来一年中得以实施。

例句

Have you made any New Year's resolutions? I want to lose weight and get fit.

My mum's New Year's resolution is to stop smoking.

Let's make it our New Year's resolution to run a marathon in 2013!

请注意

如果你 break your resolution, 意思就是你没有兑现自己的决心。

I don't bother making New Year's resolutions, as I always break them.