strike while the iron is hot

US /straɪk waɪl ðə ˈaɪərn ɪz hɑt/
UK /straɪk waɪl ðə ˈaɪərn ɪz hɑt/
"strike while the iron is hot" picture
1.

aprovechar la oportunidad, golpear mientras el hierro está caliente

to take advantage of an opportunity when it arises, without delay

:
The job offer is great, you should strike while the iron is hot and accept it.
La oferta de trabajo es genial, deberías aprovechar la oportunidad y aceptarla.
When the market is favorable, it's time to strike while the iron is hot and invest.
Cuando el mercado es favorable, es el momento de aprovechar la oportunidad e invertir.