> On cloud nine: Extremely happy when something wonderful happens.
E.g. She’s been on cloud nine since she discovered she is pregnant.
> Full of the joys of spring: When you are energetic, cheerful, and happy.
E.g. James must have had some good news, he’s full of the joys of spring today.
> On top of the world: You are on top of the world when you feel wonderful.
E.g. I’ve been feeling on top of the world since I started doing yoga every morning.
> Over the moon: This idiom isn’t used so much these days because it is considered a cliché (an overused, unoriginal expression), but it means to be delighted.
E.g. The team captain said he was over the moon with their win.
> In seventh heaven: Bliss; to be so happy it feels like you are in heaven.
E.g. I was in seventh heaven when I landed my dream job.
Checkout More Common English Idioms
used for IELTS Speaking Exam