——即便你就是爱死抽烟了，并且你祖母也抽、还活了100岁，你也得戒。

Even if you love it and your grandma smoked and lived to 100, you have to stop.

youdao

我也是。我想戒烟，但不知道戒不戒得掉。

Me too. I want to give up smoking. But I don't know if I can.

youdao

所以，告诉他们捱过21天就好了，不论什么习惯，只要能够坚持这21天的时间就可以改掉了，如果他们能撑到第21天，就戒得掉那个瘾了。

Then it's done, whatever it is. You can break anything in three weeks' time if you persist every day up to 21 days. If they can survive until that time, they will be finished with their addiction.

youdao