Reality?

Every once in a while, I stop thinking about what is happening in the world, and ask two simple questions how do I know everything we experience is real? Even more personal how do I know I exist?  The funny part of all this questions is that I was not the first person that asks this question, and I am certainly not the last person to ask this question. Before me, a lot of people have been asking this question and fortunately for me a person answered this question so I could understand a little bit more about my existence.  Rene Descartes came with the quote “I think therefore I am” which pretty much says that because we think that we exist because we think of us existing. I think Descartes does not really have a point because he says we have to be conscious that we exist to actually exist.  But how do we know that someone created that conscience to think that we are conscious and this is actually real. But we are never going to be certain of what is real and what is not. The only things we can do is live our life as this is real, and keep asking questions until we get to a real answer.