LSD was by far my favorite mind altering substance when I was taking everything under the sun at around age 18. I dosed heavily and had life changing experiences (some for the better, others that were deeply troubling), but one of the most stand-out experiences was when I took the advice of a friend and used it not to get high but to "figure out important questions." I took a very small dose, barely enough to qualify for what I typically considered a legitimate trip, and sat in the country for several hours thinking about what I wanted out of life. It was just enough to change my way of thinking enough to get outside my usual process and ended up being one of the most productive sessions of deep meditation of my life. I don't know that I would endorse doing this on a regular basis, or especially in a professional environment, but I definitely agree that a carefully moderated experience can be just right to help shift paradigms without losing touch with reality.