I think I don't sing as hard as I used to sing. I used to kind of hit the accelerator a lot back in my youth, but now it's just being able to control it, and not work it so hard and use more of an emotional or sub textual kind of approach to singing.
Spirituality comes from questioning everything but at the same time accepting everything. You can even be spiritual watching TV. When the ad comes on and says, "Don't hate me because I am beautiful," question that.