According to Osho, pratikraman feels uneasy because our whole conditioning runs outward—toward crowds, rituals and talk—so turning within is an unfamiliar, trackless path. The mind fears the unknown, and the inner journey demands utter aloneness, like death; no one can accompany you. Outer solitude (sannyas, caves) can train courage, but it’s only a means; the real step is going in.
It’s hard because we’ve always gone outward with others, so walking inside alone feels strange and scary; brief practice of being alone makes it easier.