Заранее спасибо

a blessing in disguise ( a good thing that you don't recognize at first as a good thing) — что ни делается, все к лучшему; ~ нет худа без добра

Example 1: "I lost my job and was upset at first, but I found a better one and have been much happier since." — "Losing your job was just a blessing in disguise!"
Example 2: "My car broke down again, but maybe it was a blessing in disguise; I've been wasting too much time driving around anyway."
Example 3: "The hotel is full tonight; we will need to find a new place to stay." — "Maybe it's just a blessing in disguise; I've been wanting to try a new place anyway."