keep one’s head above water

持ちこたえる、(借金せずに)自分の収入で生活する、困難にもめげず頑張り続ける、おぼれないでいる

Ex

  • Keep your head above water!
  • If they can just keep their heads above water I’ll help them.

Reference source

  • http://www.berlitz.co.jp/wm/09atwork/0909.htm
  • https://ejje.weblio.jp/content/keep+one’s+head+above+water
  • https://senglish.info/keep-your-head-above-water.html