Yes. There is no "self" to find if you look inside. There is a collection of competing impulses and desires that play out in a myriad of thoughts and behaviors, but that's all you are. You are an activity, not a thing. There is no foundation because there is no thing to put on the foundation. You are a mental process that perceives it's own activity and mistakes it for something real and substantial. You don't exist in the way you imagine you do.