What If Life Is Just A Dream

Sometimes I feel that life is just a dream. I several times have cascading dreams. A Dream within a dream. Those dreams were so real. When I woke up from first dream, I entered another dream. I realize that my first dream is just a dream and my second dream is my real life. Than I woke up from the second dream. Now I fully woke up.
What if this reality is just another dream that looks like very real? How to wake up?