R' Levi Yitzchok of Berditchev zt"l (Likutei Basar Likutei) would say: "ואברכה מברכיך ומקללך אאר ונברכו בך כל משפחת האדמה - The word "אאר" stems from the word "אור" which means "light." Hashem told Avram, 'Should there be a person who will curse you, I will open his eyes to see the light and understand who you are.' The one who curses Avram does so only because he is in the dark. Once Hashem helps him to 'see' the true light of Avram, he joins all those who pray to have children like him."
A Wise Man would say: "The best way to make your dreams come true is to wake up."