I, not events, have the power to make me happy or unhappy today. I can choose which it shall be. Yesterday is dead, tomorrow hasn't arrived yet. I have just one day, today, and I'm going to be happy in it.
It's funny how something that makes so much sense gets lost on us. I looked out the window today and saw that it was snowing again and my mood plummeted. But after reading this quote... I'm going to make sure that this one particular day is going to be a good one! It's my choice!