熟視無睹

When one door of happiness closes, 

another opens; 

but often we look so long at the closed door that we do not see the one which has been opened for us. 

當一扇幸福之門關閉時，

另一扇就會打開。

但我們經常過多地盯著那扇關閉的門，

而對新開啟的門卻熟視無睹

—海倫·凱勒