According to Osho, 'attaining Dharma completely' is impossible because Dharma/Truth is infinite and indivisible; only the finite can be had in full. You don’t grasp it—rather, you dissolve into it, like a drop merging into the ocean. Dharma (the Divine) already attains you entirely; realize this through self-recognition. Turn inward, let the ego’s greed to ‘have’ God fall away, and remember your already-present oneness.
You can’t collect Dharma like a thing; relax the ego, look within, and let yourself melt into the Truth that already lives you.