Don't be discouraged; it's often the last key in the bunch that opens the lock. —— 别灰心，往往是最后一把钥匙才能打开锁。

That’s a great line—it captures persistence in a really tangible way. Most people quit when they’re *close*, not when they’re far away, because it *feels* like it should’ve worked already.

The tricky part is that you rarely know which “key” you’re on. So the only strategy that works is to keep trying *as if* the next one could be it.

It’s a nice reminder that effort isn’t wasted just because it hasn’t paid off yet—it might just be lining up the right moment.