According to Osho, once consciousness appears, biological evolution ceases; further growth depends entirely on man’s volitional, inner effort. Human awareness is only a starting, partial step; you must consciously choose, practice, and take responsibility to shape your essence. Without deliberate effort you stagnate or fall; with it you can evolve into bliss and higher awareness, self-creating your destiny.
Nature gets us to be a little aware, but from there we must try on purpose to grow, or nothing changes.