Is it true that when you dream something the opposite happens in real life?

It is a one in a million chance of your dream coming true but it is possible because someone in my family had a dream of an earthquake a few weeks before an earthquake approached Haiti. So yes, a dream could happen in real life. The reason for this being could be that you are getting signs to be aware of the future or for some other reason.

A different response:

No, dreaming about something does not make it happen in real life. Very rarely, somebody dreams of something very similar to an event that later occurs, but the dream did not cause the event.