a blessing in disguise

una bendición disfrazada, un mal que viene para bien

• Losing that contract was a blessing in disguise — it forced us to pivot.
• Her injury was a blessing in disguise because it led her to a new career.
• Not getting the promotion was a blessing in disguise as it opened better opportunities.

This idiom is used in everyday contexts, both in speech and writing, to suggest that something seemingly negative ended up being beneficial. It is common among native speakers when reflecting on past experiences.

Spanish speakers might calque 'una bendición disfrazada' into English as 'a disguised blessing', which is not how an English speaker would naturally express it.

• by and large
  en general, en términos generales
• in the long run
  a largo plazo
• give (someone) the benefit of the doubt
  dar el beneficio de la duda
• the jury is still out
  todavía está por verse, aún no se sabe