It's a piece of cake.
It's easy
I'm in a pickle
I'm in a difficult situation
Let's call it a day.
Let's finish/go home.
We are in the same position/situation.
We are in the same boat
I am so very happy.
I'm on cloud 9
It's raining cats and dogs
It's raining very hard
Please don't breathe a word.
Don't tell it to anyone.
I let my friend off the hook
I forgave my friend
Time passes quickly
Time flies
I'm not feeling well.
I'm under the weather
I am head over heels for him/her.
completely in love
The grass is greener on the other side.
The other side (of the situation) looks better.
Get here on the double
hurry up
Wait
hold your horses
He died.
I am drawing a blank
can't remember
You need to pull yourself together.
You need to calm down
I am going to hit the hay
I'm going to sleep
very good, the best
It's the bee's knees
Making/Earning money for your family.
Bringing home the bacon
I let the cat out of the bag.
I accidentally shared the secret.
I'm all ears
I'm listening carefully
Put all your cards on the table
be honest
Following the wrong course of action/making a mistake
You are barking up the wrong tree
To manage all your work/responsibilities well.