The expression ” bury the hatchet” is used when people who have had
a disagreement decide to forget their quarrel and become friends again;
to make peace;
“I didn’t agree with my colleague’s decision, but for the sake of peace,
I decided to bury the hatchet.”

When a trend has changed from one thing to another, the tide
has turned.
“Before, people wanted to live in residential suburbs; now the tide
has turned and warehouses are being converted into fashionable
loft apartments.”

A person who is on cloud nine is very happy because something wonderful has happened.

“For a few days after I heard I’d got the job, I was on cloud nine.”

Be optimistic, even difficult times will lead to better days.

” I’m sorry your business is going badly, but don’t despair. Every cloud has a silver lining.”
“When Natalie’s friends visited her in the hospital, they tried to cheer her up, but Natalie never could find the silver lining in the cloud of her illness.”

Clumsy, awkward, aggressive, without care, concern or self-control.

“She’s like a bull in a china shop when it comes to dealing with people’s feelings. (= behaves in a way that offends people)”

not to take sides in a dispute; not to make a clear choice between two possibilities; to remain neutral on a certain topic, to not have an opinion

“When Paul and Nancy argue, it is best to sit on the fence and not make either of them angry.”
“No one knows which of the candidates George will vote for. He’s sitting on the fence.”

The last straw is the final problem that makes someone lose their temper or the problem that finally brought about the collapse of something. It comes from an Arabic story, where a camel was loaded with straw until a single straw placed on the rest of the load broke its back.
[from the proverb, ``It is the last straw that breaks the camel's back'']