How its changed his life and what he has to say about that bizarre behavior. Im on a drug. Its called Charlie Sheen. Its fun to kind of watch sometimes but also a little cringeable. What hes revealing this morning. Sorry. Only on gma. Saying goodbye. President obama delivering his final address to the nation as president thanking the country for his eight years in office. You made me a better president and you made me a better man. Warning about the forces that have the potential to drive us apart but hopeful about americas future. Yes, we can. Yes, we did. Yes, we can. The emotional farewell. And we do say good morning, america, on this wednesday morning and president obama delivering that emotional speech in his adopted chicago last night. Very different kind of farewell address. Saw him in front of that crowd of 20,000 people but he did end whats came on to the national stage, emotional moment there, thats when he was talking about Michelle Obama. Even got malia to tear up but the t