no saber a qué carta quedarse

Meanings:

• 1.

  SpainLatin AmericaGeneralneutralcolloquial
  • Literally, not to know which card to hold in a card game.

• 2.

  SpainLatin AmericaGeneralneutralinformal
  • To be uncertain about which option or course of action to choose; to be undecided in the face of several possibilities.