A blessing in disguise - Ex: Losing my job was a blessing in disguise because it pushed me to start my own business.
Meaning: Something that seems bad at first but turns out to be good.
Bite the bullet - Ex: I didn’t want to go to the dentist, but I had to bite the bullet and get it done.
Meaning: To endure a difficult situation bravely.
Break the ice - Ex: To break the ice at the party, I started with a few jokes.
To make people feel more comfortable in a new situation.