In the kite runner, how did going to california amir achieve his dream?

In The Kite runner, going to California Helped Amir achieve his dream because:

Amir went to college in California, and published a book.

Explanation:

The Kite runner is the story of a boy born and raised in monarchy Afghanistan. However, due to political reasons he and his father leave it to look for a better place. His dream is to save his best friend Hassan. So, when he achieves success in California as an author he uses his success to save his friend from Afghanistan.