The professor holds up a glass of water in class and asks students to guess its weight. When the students provide guesses, the professor notes that he doesn't actually know unless he weighs it. He then asks what would happen if he held the glass up for an hour or a day. The students note that his arm would begin to ache and could go numb. However, the professor notes that the weight of the glass did not change. He explains that life's problems are like the glass of water - they may seem manageable at first but can become overwhelming if dwelled upon for too long. The key is to "put the glass down" at the end of each day by not stressing over problems before sleep so you can