take the plunge
US /teɪk ðə plʌndʒ/
UK /teɪk ðə plʌndʒ/

1.
dar el paso, tomar la decisión
to decide to do something important or difficult that you have been thinking about for a long time
:
•
After years of deliberation, they finally decided to take the plunge and buy a house.
Después de años de deliberación, finalmente decidieron dar el paso y comprar una casa.
•
She was nervous, but she knew it was time to take the plunge and start her own business.
Estaba nerviosa, pero sabía que era hora de dar el paso y empezar su propio negocio.