to hope for good luck
esperar tener buena suerte (esperar tener buena suerte)
"I am keeping my fingers crossed for the exam results."
"Estoy cruzando los dedos por los resultados del examen." (estoy cruzando los dedos por los resultados del examen)
To motivate someone to take action or work harder.
to take back what you said
in a state of great happiness
to do something revolutionary or extremely difficult
to lose advantage or control in a situation
when advice or complaints are ignored