Empty Void in Me

I feel like I’m trying to fill an empty void inside me. I feel like something is missing, but I don’t know what that is. I’ve tried everything to fill that void but it just keeps getting bigger. I hate filling up that void just to make myself happy for a while. Somehow I know that it will haunt me after that. I know I cannot rest till I find a permanent way of closing that void. I hurts badly, sometimes takes me to the brink of depression. What can I do?