A lecturer was giving a lecture to his student on stress management.
 He raised a glass of water and asked the audience,

 "How heavy do you think this glass of water is?"

 The students' answers ranged from 20g to 500gm.
"It does not matter on the absolute weight. It depends on how long you
hold it.
 If I hold it for a minute, it is OK.

 If I hold it for an hour, I will have an ache in my right arm.

 If I hold it for a day, you will have to call an ambulance.

It is the exact same weight, but the longer I hold it, the heavier it
 becomes."

 "If we carry our burdens all the time, sooner or later, we will not be
able to carry on, the burden becoming increasingly heavier."

"What you have to do is to put the glass down, rest for a while before
 holding it up again."
We have to put down the burden periodically, so that we can be
refreshed and are able to carry on.

 So before you return home from work tonight, put the burden of work
down.