The intrusion of subconscious images and memories is one of the side effects of meditation. One's meditation technique and motivation for meditation play key roles in the influence of the subconscious on our meditation.
- There is value in the instruction that responds to these images with the guidance that says to us: "When negative images appear in the mind, do not react: do not suppress them; simply observe them with a calm, steady mind until they dissolve like fog under the noonday sun." This instruction can be related to Patanjali's second sutra "Yogas chitta vritti nirodha" (The state of yoga comes when the mental and emotional reactive processes are stilled.) This practice requires the ability to concentrate deeply without emotional response. Accordingly, this approach DOES NOT always work when the images are overpowering. This is the stoic, or gyanic, approach.
- Energy control (karma yoga). This approach, based on raja yoga, encourages the meditator to raise the prana/energy to the higher chakras and thus bypass or lessen the influence of the memories stored in the lower chakras. This approach instructs the meditator to anchor the attention at the point between the eyebrows AND to awaken the natural love of the heart in order to raise that feeling upward to the Kutastha (point between the eyebrows). Then, when and if negative images appear to the mind, simply hold steady with one's attention at the spiritual eye reinforced by devotional pulsations from the heart center upward. Here, too, however, it is important to stay calm and centered in the spine. The more one reacts emotionally to such images the less control one will have in facing them or transcending them.
- Bhakti. The devotional path is greatly helped by the suggestions above but for some people devotion (alone) is their Ishta Devata, or Chintamani. Accompanied by prayer or mantra and offered upward from the heart, devotional fervor, the grace of the Mother, can dispel the gloom of past lives, all of which, Swami Sri Yukteswar explains, are "dark with shame."
- General. Transcending the past, the hidden subconscious memories, should never be a process of denial or suppression. ("Of what avail," Krishna asks, "is suppression!") At the same time, their stored up energy exists and can be best countered by putting out conscious, intentional and present-tense energy upward toward the seat of the soul (crown chakra--approached via the point between the eyebrows). A practical view of this is to suggest a multi-level approach to your sadhana: yoga exercises (or Energization Exercises taught by Yogananda--see YouTube or the Ananda meditation app); prayer including healing prayers for others; mantra and chanting; breath control (pranayama); and silent, inner communion. Supporting sadhana can be daily service in the spirit of nishkam karma (non-attachment), spiritual reading and study, satsang with other devotees, seeking the company of saints, pilgrimage to places made holy by the presence of saints and masters, and living according to the precepts of yama/niyama.