临渊羡鱼，不如退而结网

lín yuān xiàn yú , bù rú tuì ér jié wǎnglinyuanxianyu,burutuierjiewang

1. better to go home and weave a net than to stand by the pond longing for fish (idiom)
2. one should take practical steps to achieve one's aim

Study it in Yanamino