As the teachings say, mind is the root of everything. It is the creator of happiness and the creator of suffering; the creator of samsara and the creator of nirvana.
In this video from Myall Lakes, Australia, Sogyal Rinpoche explains that someone who practises dharma—the teaching of the Buddha—is someone who works with the mind. Dharma is a way of transforming the mind. As the Dalai Lama often says, ‘Buddhism is about transforming the mind.’ Therefore, since the mind is the root of everything it is up to you—or more precisely—your mind.