How long you didn't

1. How long you haven't look outside the window when in public transportation ?

2. How long you haven't see the eyes of passengers on the same MRT ?

3. How long you didn't turn your mind blank for 40 minutes ? 

4. How long you didn't return to the place you grow up and revisit those memories accompany your childhood 

5. How long you didn't say THANK YOU to strangers ?

6. How long you haven't listen to the song by Lieon Richie with the title " HOE LONG ? "