can't see the forest for the trees

US /kænt si ðə ˈfɔrɪst fɔr ðə triːz/
UK /kænt si ðə ˈfɔrɪst fɔr ðə triːz/
"can't see the forest for the trees" picture
1.

只見樹木不見森林, 因小失大

to be unable to understand a situation clearly because you are too involved in too many small details or problems

:
He's so focused on minor issues that he can't see the forest for the trees.
他過於關注小問題,以至於只見樹木不見森林
Sometimes you need to step back and look at the bigger picture, otherwise you'll can't see the forest for the trees.
有時你需要退後一步,看看大局,否則你就會只見樹木不見森林