hold your horses
wait a moment
cost an arm and a leg
very expensive
break a leg
good luck
Better late than never
Better to arrive late than not to come at all
A blessing in disguise
a good thing that seemed bad at first
Cut somebody some slack
Don't be so critical
Get your act together
Work better or leave
Go back to the drawing board
Start over
Hang in there
Don't give up
Hit the sack
Go to sleep
On the ball
Doing a good job
It's not rocket science
It's not complicated
No pain, no gain
You have to work for what you want
Pull someone's leg
To joke with someone
Under the weather
Sick
Wrap your head around something
Understand something complicated
