explain amir's mentality as the last two kites were left flying?

Amir and Hassan were a great team and theirs was one of the last two kites left in the sky. Their hands were bloodied from holding the sharp string, but their hearts were filled with hope of winning the tournament. Amir focused hard and to his surprise, he cut the last, blue kite and won. The true victory for Amir was seeing Baba hollering with pride.