According to Osho, that unchanged sense of being—the same as when you were a child—is your witness. First, childhood may appear as an object you observe; keep witnessing without clinging. Soon even ‘childhood’ dissolves, leaving only pure subjectivity—the empty mirror of awareness. This nothingness is nirvana. Continue until only witnessing remains, alone without a second.
The steady feeling you’ve had since childhood is your watching awareness; keep gently watching until even the idea of childhood falls away and only clear awareness remains.