The best way to forget something is to replace it with something better.
幸福就像一只蝴蝶:你越是想抓住它,它就越飞走。但如果你停止追逐,它可能会落在你身上。
If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.