Existentialism There is no reality except in action?

Your reality is "being in the world". If your a existentialist your reality is your own choice, not what others think or believe. To you knowing is to make a personal choice, on anything. your destiny is death you presence is whatever the current temp is. Your values are created through your own choice. It's all about choice. You tend to keep moving when something goes bad, cause it's your choice to, while others might stay down and sad YOU tend to brush off and move on.