1) Body and Breath
The Yoga practices with Body and Breath bring health benefits and balance in life. However, many people stop at the Breath, and are unwilling to explore or train the Mind. It is like building a wall between the Yogic stages of Breath and Mind. Some sincere seekers delay out of fear. Others incorrectly believe that Yoga is only about physical fitness. The key for the sincere seeker of the highest joy of Yoga is to be gentle and loving towards yourself, and persist with all levels of Yoga, including directly dealing with the Mind itself.
2) Conscious Mind
Mindfulness of the emotional and mental processes of the Conscious mind is very stabilizing. In Yoga, this includes meditation and contemplation on attitudes of friendliness, lovingness, compassion, and acceptance. It includes cultivating non-harming, truthfulness, non-stealing, remembering of truth, and non-possessiveness. However, many stop at this level of mind, and effectively build a wall between the Conscious and Unconscious, not willing to explore the depths of the Unconscious. Many get stuck here by thinking the goal of meditation is only a calm mind. For Union, Yoga, Samadhi, or Turiya, the streams of thoughts in the Active Unconscious mind need to be encountered, explored, and only then transcended.
3) Active Unconscious
By allowing the Active Unconscious to come forward and be witnessed in a neutral way, the thought patterns colored with intense attraction and aversion gradually weaken, allowing a greater peace and freedom of mind. This is one of the most direct ways to deal with the purifying, centering, or balancing of troublesome thoughts. However, few go beyond the boundary between the Active Unconscious and the Latent Unconscious. The Active Unconscious has alluring visions and sounds. Only the most dedicated Yogis are willing to completely transcend sensory experience of both external and internal objects, and to pursue the formless Latent level out of which the Active arises.
4) Latent Unconscious
To be fully aware of the Latent Unconscious is a very deep state, and an aspect of advanced meditation (Authentic Yoga Nidra reaches this Latent Unconscious level with practice). It is underneath, beyond, or prior to the pictures and words of the Active Unconscious. It is the ground out of which those emerge. All sensory experiences such as sights and sounds have been left behind, whether of external worldly objects or inner images. To consciously rest in the awareness of the Latent Unconscious is to be filled with bliss. However, there comes a point where individuation itself is the final wall, and even the bliss needs to be transcended. Even for the experienced practitioner this can be a great obstacle. It is beyond the mind in the conventional sense of mind, so the mind can no longer be an aid. Body and breath cannot help. It is only surrender that finally helps.
5) Realization
Whether you call it Grace, God, Guru, Shaktipat, or some other name, the greatest help of all finally comes from within to remove the final barrier of ignorance (Avidya). This final stage is a process that has been called piercing the pearl of wisdom (Bindu). A Yogi does not debate whether the Realization is called Yoga, Self, Atman, Soul, or God, etc., but rather, lives "in" the world while not being "of" the world.