I think you kind of touched on this, but I wanted to elaborate: for me, spirituality, becoming more in tune with a sense of the Universe and a divine power if you will, was what really pushed me forward in my self-development journey. As you say, there is no "scientific" proof for this, but it works because there is power in belief, especially when that belief supports you instead of going against you. So I would challenge the need for everything to even have a scientific explanation at all. The simple truth is that there will always be things we can't explain scientifically, and that's okay. Great article!