You are right. It is about decluttering external Truth and belief until we eventually return to "the only Truth lies within oneself". All is belief. Yet many people try to cloak belief as Knowingness. In reality this is merely a very strong and deeply engrained belief. The stronger this belief gets the more our external world will reflect that belief back to us. So naturally, starting the process of finding back to within is initially quite rocky because the external takes some time to reflect our new sense of Truth back to us. But once it happened we have set the anchor of Trust we can always resort to! :)