Bite the bullet
To get something over with because it is inevitable
Cut somebody some slack
Don't be so critical
Hit the sack
Go to sleep
It's not rocket science
It's not complicated
Hang in there
Don't give up
Break a leg
Good luck
Call it a day
Stop working on something
Easy does it
slow down
Get your act together
Work better or leave
Give someone the benefit of the doubt
Trust what someone says
You can say that again
That's true, I agree
Go back to the drawing board
Start over
A dime a dozen
Something common
Better late than never
Better to arrive late than not to come at all
Get something out of your system
Do the thing you've been wanting to do so you can move on
Time flies when you're having fun
You don't notice how long something lasts when it's fun
Wrap your head around something
Understand something complicated
The best of both worlds
An ideal situation
That's the last straw
My patience has run out
Speak of the devil
The person we were just talking about showed up!
Pull yourself together
Calm down
On the ball
Doing a good job
Pull someone's leg
To joke with someone
Make a long story short
Tell something briefly
Give someone the benefit of the doubt
Trust what someone says