Answer:
I believe it means that once you rech your fullest potential, you can make the imposible, posible.
It could also mean that who you are now, you used to think was impossible.
Explanation:
Theses are the two posible meaning I came up with by looking at it two different ways.
The target for an audience for an open letter is a specific individual! For more information go to: https://en.wikipedia.org/wiki/Open_letter
Answer:
6. Introduced
7. Was. ⁷'² Did not/didn't have
8. To come
9. Was calling
10. Listening ¹⁰'² Drives
11. watched
Are you sure it's a word? I can't seem to find it anywhere.