当局者迷。

You can't see the forest behind the trees.

Source: Tatoeba

Sentence Composition

1 当局者 dāngjúzhě
  1. (chess) participant; player
  2. participant; player
2 迷 mí
  1. to bewilder
  2. crazy about
  3. fan
  4. enthusiast
  5. lost
  6. confused