Let's be familiar with Idioms which are related to the happiness Or sadness and their meaning in Persian.

1. be in the seventh heaven:تو آسمان هفتم بودن

 be extremely happy

-He received a graduation present. He is in the seventh heaven.

2. be on cloud nine: تو آسمان نهم بودن

  be extremely happy 

-Today, he is on cloud nine.

3. be on the top of the world: تو آسمانها سير كردن

feel extremely good   

-He won the contest. He is on the top of the world

4.walk on air: تو آسمانها سير كردن / Be on top of air تو ابرها سير كردن

feel happy and excited

5. be down in dumps: تو هم بودن - دمق بودن  

 be depressed     

6. be out of sorts: ساز نبودن

be in a bad temper

7. feel blue: دمق

 be sad

- He can't find his pen! He is feeling Blue.

8.look like one has the weight of the world on one's shoulder:

 be very tired and worried  مثل اينكه دنيا رو سرش خراب شده

- Sally lost her job. She looks like she has the weight of the world on her shoulder.

9. Look like one lost one's best friend: انگار عزيزش را از دست داده

look very unhappy

- She got her grades, she looked like she had lost her best friend.

10. be tickled pink: قند تو دل كسي آب شدن

 be very happy 

- She is tickled pink with her new car.

11. Feeling like a million bucks: مثل اينكه دنيارو بهش دادن

 be in a very good mood  

-After vacation he feels like a million bucks.

12. Feeling top of the world  او از خوشحالی با دمش گردو می‌شکست

related to idiom and fixed phrases