“A new lease on life”

“Keep an eye on”

To watch or monitor carefully.

“Fall on deaf ears”

To be ignored or not listened to.

“On thin ice”

In a risky or dangerous situation.

“Wear your heart on your sleeve”

To show your feelings openly.

“Go out on a limb”

To take a risk by saying or doing something.

“On the same page”

Agreeing and understanding the same thing.

“On the ball”

Alert, quick to understand, and able to react well.

“On cloud nine”

Extremely happy.