Here are the corrected sentences with mistakes underlined:

1. A lot of people are good artists and they are **successful** in life.
**Correction:** successful → successful

2. Music **promote** creativity, social development, and personality.
**Correction:** promote → promotes

3. The Mona Lisa is an oil **paint** by the Italian artist Leonardo da Vinci.
**Correction:** paint → painting

4. To him, art is like breathing, and he can live without it.
**Correction:** (No mistake)

5. Rap music, also known as hip-hop music, is **different** from other styles of music.
**Correction:** different → different

6. My mother **don’t** like rock music and I don’t either.
**Correction:** don’t → doesn’t

7. How long do you go to the movies? - **Twice** a month.
**Correction:** Twice → Once

8. The weather today is not so hot as it is yesterday.
**Correction:** is → was