hold your horses
wait a moment
Hit the sack
Go to sleep
cost an arm and a leg
very expensive
Give someone the cold shoulder
Ignore someone
On the ball
Doing a good job
Better late than never
Better to arrive late than not to come at all
Saving for a rainy day
Saving money for later
Under the weather
sick
Once in a blue moon
Rarely
break a leg
good luck
call it a day
stop working on something
Hang in there
Don't give up
The ball is in your court
It's your decision