日月蹉跎

rìyuècuōtuó
the years have slipped by

CEDICT

歲月流逝，一無所成。

重編國語辭典

Entry Composition

1 日月 rìyuè
  1. the sun and moon
  2. day and month
  3. every day and every month
  4. season
  5. life and livelihood
2 蹉跎 cuōtuó
  1. (literary) to slip
  2. (of looks etc) to fade away
  3. (of time) to slip away
  4. to squander (time, opportunities); to dillydally