Stages of spiritual growth

[Tatjana Meira]

The models and nature of spiritual growth and transformation are seen in divergent ways in different approaches -- Buddhism, Yoga, Wilberian integral theory, Stanislav Groff's, personalist spiritualism, transpersonal approach -- are few to mention. There are also various techniques -- types of meditations, dream analysis & lucid dreams for instance. Can we try to find out the best defendable model and technique(s)? What is actually the nature of human spirit?