@kasper81 said
"
Did these practices change you in anyway?"
I'm not sure what "change you" means. Some would argue that you can never "change you," you can only change the outward appearance of you. Behaviorists would argue that once a personality is formed, it is unchanging, or that at the very least the "core belief structure" of the personality does not change "without a traumatic cause."
What the practices of Liber III (and other practices) do is teach. They may teach you something about your nature, human nature, abilities, and your belief structure regarding the world you live in.
As Jim loves to say, your mileage may vary.