Is the Glass Half Full or Half Empty?

I admit... I have no idea at first about the difference of the above sentences... I meant, both sentences means the same thing, right? There is only half volume of water in a glass... Until I saw this program on television, about accidents on airplanes around the world. This airplane was having trouble on their engines. None of the engines can be turn on and the crew only have ten minutes to keep on trying to turn on the engines before the plane crashed into the ocean. Every time they try to turn the engines, it will takes approximately about three minutes before the engines really fully functioned. They tried on and failed. Again and again. Until suddenly the engines started to work again, and the pilot were saying like this,"We are all so relieved. The glass now suddenly half full instead of half empty..." [caption id="attachment_140258" align="alignleft" width="300" caption="Ilustrasi/Admin (shutterstock)"][/caption] I was like... ooooh, so that's the meaning of those words... Glass half full means that there is a way out even if only a little from our problem rather than glass half empty which means the other way around ..., naturally... So, I browse the internet and find this link. as I quote from the above link : Is a common expression, used rhetorically to indicate that a particular situation could be a cause for optimism (half full) or pessimism (half empty);) Recently I feel that my glass is half empty and about to get empty one hundred percent... but I have to keep my dream alive to find a way to fulfill that dream and start to find a way how to make my glass half full and eventually becoming fully full :) Thank you my dear Father in heaven to open my mind :)