Study into the doctrines of regeneration, salvation, and discernment between body, soul and spirit indicate that the significant aspect of Christianity is being born again, regenerated, in the spirit. Until that action by the Holy Spirit, we remain dead to God in the spirit. For this reason, the phrase, "this experience changed me spiritually" without being born again, if truthful, might mean the person's soul has been possessed by a fallen angel or that the person confuses soulish emotionalism with the spirit.
Interestingly, the author uses buzzwords also associated with those who study the occult such as 'enlightenment'.
"Interestingly, the author uses buzzwords also associated with those who study the occult such as 'enlightenment'."
In Orthodox Christianity, the newly baptized are said to be enlightened. So the concept of enlightenment is not owned by devotees of the occult.