I would like to tell one story to you.
There was one trader in a village. He had a one glass and one diamond...both of same size, colour. No one can differentiate it by its physical appearance. He used to challenge every one to identify the real diamond..... but no one could succeed. He traveled at many places and was challenging each and every person, but no one can identify it.
Once he went to 1 village he started challenging every villagers... so everyone failed to identify... then 1 blind old man came and said to the trader that he can identify the real diamond . Everyone was shocked because people with eyes cannot identify how can he... After touching both.. the old man identified the real diamond. Everyone including trader started appreciating old man. Then trader asked one question to old man,"How did you identified this? ". Then the old man said You kept both elements naked to the sun... and Diamond has quality that it remains cool even if it kept under the sun. So it was easy to identify.
This story tell us that u should remain cool whatsoever the situation is.. just like diamond.