Better late than never
Better to arrive late than not to come at all

Break a leg
Good luck
It's not rocket science
It's not complicated

So far so good
Things are going well so far

That's the last straw
My patience has run out

Get your act together.
Work better or leave.

Hang in there
Don't give up
No pain, no gain
You have to work for what you want
Pull yourself together
Calm down

Your guess is as good as mine
I have no idea

Speak of the devil
The person we were just talking about showed up!

Time flies when you're having fun
You don't notice how long something lasts when it's fun

We'll cross that bridge when we come to it
Let's not talk about that problem right now

You can say that again
That's true, I agree

A penny saved is a penny earned
Money you save today you can spend later

Actions speak louder than words
Believe what people do and not what they say

Break the ice
Make people feel more comfortable
Costs an arm and a leg
Very expensive

Every cloud has a silver lining
Good things come after bad things

You can't judge a book by its cover
This person or thing may look bad, but it's good inside

Put something on ice
Put a projet on hold

Get a taste of your own medicine
Get treated the way you've been treating others (negative)
You can't have your cake and eat it too
You can't have everything

Time is money
It is to illustrate the point that when time is not used for some sort of productive work, money is lost. Time is money. Be faster!

Bite the bullet
Decide to do something unpleasant that you have avoiding doing.