得心应手 dé xīn yìng shǒu

DEFINITIONS

  1. lit. what the heart wishes, the hand accomplishes (idiom) skilled at the job
  2. entirely in one's element
  3. going smoothly and easily

CHARACTERS

得 dé obtain, get, gain, acquire
心 xīn heart; mind, intelligence; soul
应 yìng should, ought to, must
手 shǒu hand