You can't have a better tomorrow if you don't stop thinking about yesterday.

问题描述:

You can't have a better tomorrow if you don't stop thinking about yesterday.

如果你仍为逝去的昨日时光而烦忧,你将很难拥有/享受/体会美好明日.
其实这句挺像泰戈尔的——If you shed tears when you miss the sun ,you also miss the stars.(若你因错失太阳而流泪,你也会错失繁星.)