Take heart 鼓足勇氣；振作起來

Take heart - to receive courage or comfort from some fact

Jimmy has been taking heart since  he met a pretty lady as a wife to be.  自從吉米遇見了一可以當老婆的漂亮女人後，他開始振作起來。

Mike should take heart because the situation is improving.  麥克應該振作起來，因為情況已有改觀！