"Remember to put the glass down."

A psychologist walked around a room while teaching stress management to an audience. As she raised a glass of water, everyone expected they'd be asked the "half empty or half full" question. Instead, with a smile on her face, she inquired: "How heavy is this glass of water?" Answers called out ranged from 50mL to 300mL. She replied, "The absolute weight doesn't matter. It depends on how long I hold it. If I hold it for a minute, it's not a problem. If I hold it for an hour, I'll have an ache in my arm. If I hold it for a day, my arm will feel numb and paralysed. In each case, the weight of the glass doesn't change, but the longer I hold it, the heavier it becomes." She continued, "The stress an worries in life are like that glass of water. Think about them for awhile and nothing happens. Think about them a bit longer and they begin to hurt. And if you think about them all day long, you will feel paralysed - incapable of doing anything.