According to Osho, heaven need not be brought to earth - earth is already heaven; only awakening is required. Mind-made sleep, culture, and ambition veil it, turning bliss into misery. Hell is discontent; heaven is contentment and grateful awareness, as seen in children. A healthy, unambitious, loving society becomes possible when individuals drop the chase for 'more,' protect innocence, and live in remembrance and gratitude.
Heaven is here when we wake up, stop chasing more, and stay simple and thankful like children, and then our world becomes kind and loving.