We have been warned of the dangers of humanistic teachings in psychology. Whoever is warning you of these dangers deserves a big pat on the back.
Psychology is the study of the human mind.
For a Christian, this is a deadly poison. The Christian, you see, is under authority of God's Word. Humanistic psychology is directly opposed to the Bible. Humanism teaches that human beings are their own gods. It is based on the teachings of evolution and atheism.