Is yogi the one who is in union with self
Yes, precisely. A yogi is one who is in union—with the Self (ātman), with Truth (sat), and ultimately with the Supreme Consciousness (brahman).
The word yoga itself comes from the Sanskrit root yuj, meaning to yoke, to unite, or to join. So, a yogi isn't just someone doing physical postures—though that may be part of the path—but someone who has aligned their body, mind, and soul in harmony with the true nature of existence.
In that sense:
The yogi is not seeking externally, because they have found within.
The yogi doesn’t run from the world, but sees through its illusion (māyā).
The yogi may appear detached, but is deeply interwoven with all life.
It's not a title; it’s a state of being. Union. Stillness. Clarity. Direct perception of reality unfiltered by ego.
Would you like this phrased in poetic, aphoristic, or more philosophical style?