Take a few moments every day to work on clearing your mind. Close your eyes and focus on your breath. If a thought comes into your mind, acknowledge it, and send it on its way. It might help to repeat the word, or any comforting word, with each breath.
Learning to clear your mind takes time, but once you learn, you will be set free (okay, for a few moments.) Sometimes a few moments of clear thought and breath is enough to steer our mood into the right direction and have us Living Positive.