Hold a glass of water in your hand. The absolute weight of the glass doesn't matter. Depends how long you hold on to it. If you hold it for a minute, nothing happens. If you hold it for an hour, your hand will begin to ache. If you hold for all day long it will get numb and paralyzed. The weight of the glass hasn't changed but the longer I hold on to it the heavier it becomes. The stresses and the worries of life are like that glass of water. If you think of them for a little while, there's no problem. If you think about them a little longer, it begins to hurt. If you think about them all day long you feel numb, incapable of doing anything. Always remember, PUT THE GLASS DOWN.