Pie in the sky. = To think rightly and over optimistically.
I think Mr.Abe's new economic program is pie in the sky.
A beautiful world. = Some things are good and some things are bad. But in the end, everything works out because it's a beautiful world.
It was a cold and rainy day yesterday but it's warm and the sun shining today. It's a beautiful world!!!
To play it by ear. = To make up as you go along.
If you don't understand the situation, play it by ear.
To live and let live. = Not to worry about small things and to forgive the mistakes of others.
When driving, I am sometimes cut off by a rude driver. Instead of being angry, I just say live and let live.
A heart of gold. = A person who is very kind, helpful and understanding.
Everyone's mother has a heart of gold.
To lighten up. = To relax or to ease tension.
If the trains are packed, try to lighten up and enjoy the ride.
That's life. = That's the way it is, if can't be helped.
I got to work late this morning because the train was delayed. It's no use getting upset. That's life.
Prime time. = The best time.
Prime time for television is between 9:00pm and 11:00pm.
To look before you leap. = To think before you do something.
Before buying stocks, you should look before you leap.
To nix. = A slang word which means no, not at all.
To keep my weight down I must nix ice cream. But I don't want to.