Expressing your feelings is a great way to let others know how you feel about many different things.
Happiness:
There are many words and ways to express happiness. I will try my best to explain different ways of expressing happiness.
It was nice talking to you. (Said when departing from someone)
It’s like a dream come true. (Something you didn’t think would happen)
I’m getting teary-eyed.(Watching something or experienced something emotional)
I’ll never forget about this. (Positive: Something amazing happened. Negative: Something terrible happened.)
I’m honored. (Someone, or people show great respect)
I’m touched.(Similar to ‘I’m honored’ but showing more emotion)
I’m having a ball. (When having a lot of fun)
Please note that this is all generalised and personal opinion. Other time when learning English you’ll pick up different ways to say things, words and slang that not included in here.
Let me know in the comments below. Which is more common in your country. Which one you didn’t know and if there are more to add!
Tia