Как по Английски будет не было бы счастья, да несчастье помогло

Something that seems bad or unlucky at first, but results in something good happening later

Примеры использования:

Losing that job was a blessing in disguise really.

phrase

An apparent misfortune that eventually has good results.

Примеры использования:

Being omitted from the world cup squad was a blessing in disguise

idiom

Something that seems bad or unlucky at first but causes something good to happen later

Примеры использования:

Being laid off was a blessing in disguise – within a month i got a much better job.