The Yamas and Niyamas - svadhyaya
According to yoga sutra 2.44, one who practices Svadhyaya acquires the ability of deep concentration, attaining higher consciousness and is able to comprehend deeper truths. There are several interpretations of this principle. Its first meaning is self-analysis, self-realisation, self-education, awareness of oneself as a whole structure in various aspects: mental, emotional and spiritual.
The second meaning of this principle is the study of the scriptures, spiritual texts, reading and reciting scriptures. The third meaning is chanting mantra aloud and performing mantra japa, this is considered the highest form of Svadhyaya as the mind becomes so still and single pointed any unconscious thought patterns will definitely rise to the surface.
Essentially doing practices that provide us with an illuminated state of consciousness which then allows a study of lower self from an elevated vantage point. From this perspective we are able to see the negative and positive aspects of past actions and deeds and how our lower self relates to the world and life.
For the best results It is necessary to practice Svadhyaya daily. For most of us, it is difficult to break away from our daily habits and routine, compare how much energy you spend focusing on the material world, and how much time you devote to the spiritual world? When embarking on the path of spiritual self-awareness and improvement, the spiritual world needs to become a high priority.