You are looking in the wrong place.
barking up the wrong tree
Good luck!
break a leg
It's very easy
a piece of cake
Feeling nervous, especially before a speech or performance.
butterflies in my stomach
Don't feel sad about something you can't change
don't cry over spilt milk
Putting every important thing in one place is dangerous
don't put all your eggs in one basket
You are feeling sick.
under the weather
You are so surprised or nervous that you can't speak
cat got your tongue
You told someone a secret.
let the cat out of the bag
You are trying to do a good thing.
heart is in the right place
Make sure you're right before you make a plan
don't count your chickens before they hatch
You read many books.
bookworm
Don't give up!
hang in there
Become comfortable with a new person
break the ice
It is VERY expensive
it costs an arm and a leg
You did two things with one action.
kill two birds with one stone
Nothing is really free.
no such thing as a free lunch
Time goes quickly when you are having fun
time flies
If you begin before other people you will be successful
the early bird gets the worm
You are exactly correct.
hit the nail on the head
You should do something difficult right now, don't wait.
bite the bullet