I found this sage advice on twiitter:

Quote: A psychologist walked around a room as she talked stress management to her audience.  As she raised a glass of water, everyone expected they'd be asked the "half empmty or half full" questions. Instead, with a smile on her face, she inquired "How heavy is this glass"?

Answers called out ranged from 8 oz to 20 oz.

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 paralyzed. In each case, the weight of the glass doesn't change, but the longer I hold it, the heavier it becomes".

She continued, "The stresses and worries in life are like that glass of water. Think about them for a while and nothing happens. Think about thema bit longer and they begin to hurt. And if you think about them all day long, you will feel paralyzed- incapable of doing nothing.

Remember to put the glass down.