Think of how it is with a child, when newborn they are almost like a blank canvas. Watching them grow and explore new things, new ideas, learning things, asking questions. They are filled with awe and wonder of the world around them.
The place you are at now, as many of us is like starting over again. Your belief system has been crushed, the house you built on WT sand has been washed away. What you choose to do now is all down to you. It's time to ask questions, even if you come to dead ends, (we can't know everything). Look at the world around you with new eyes. Dig deep inside yourself and find out how you really feel about things and not what someone else has told you that you should feel. You feel lost and empty because now you have to rely on yourself for your answers. The ones you relied on for answers have proved false. It's a devastating feeling to find out those you trusted can't be trusted anymore. Now you have to find your own way.
However, it's a time of learning, of self discovery, of real meaning. Enjoy the ride!!