The term "Yogi" is an eminent concept in Sanskrit literature, frequently associated with spiritual practices and personal transformation. In the Bhagavad Gita, one of the seminal texts of the Mahabharata, the term "Yogi" accrues a profound philosophical and ethical resonance.

In this text, a Yogi embodies an individual who's achieved a state of consciousness that transcends the mundane distractions of the physical world, enabling a deeper connection with the self and the universe. This state is not obtained simply through physical postures or withdrawal from society, but primarily through a disciplined mind and an ethical life.

The Bhagavad Gita delineates three primary paths to spiritual awakening and self-realization, depicting them as ways of becoming a Yogi: the paths of knowledge (Jnana yoga), of selfless action (Karma yoga), and of loving devotion (Bhakti yoga). These varied pathways demonstrate that the path to Yogic transcendence is not a one-size-fits-all path but well-adjusted to the nuanced temperaments and capabilities of individual seekers.

The Yogi is portrayed as one who remains equanimous in pleasure and pain, who is free from envy, who is content and mentally steady. They are the ideal examples of self-restraint, living life with detached involvement, performing duty for duty's sake, perceiving the unified field of existence, and finding peace within themselves rather than in the external world.

In Sanskrit literature, physical postures (Asanas) and breath control (Pranayama) are often associated with the term "Yogi." However, the larger context always points to a highly evolved state of consciousness. The Yogi, then, is not only a practitioner of physical exercises; more crucially, they are a seeker on an inward journey towards liberation (Moksha), transcending physicality and duality to understand the ultimate reality.

In essence, a Yogi in the Bhagavad Gita and wider Sanskrit literature is a symbol of inner-peace, self-realization, and profound wisdom, living in perfect harmony with the self and the cosmos.