Lama Zopa recently replied to a new student about the purpose of Dharma practice. To read the letter, click here. This might be of use to people just getting started and wonder about how to concentrate their efforts. which is an essential point to understand in practice.
Lama Zopa mentions the excerpt below in the letter, which
All the suffering of samsara comes from the mind. Happiness, liberation and enlightenment come from the mind. Suffering comes from the unsubdued mind. Liberation and enlightenment come from the subdued mind, therefore, subduing the mind is essential. So what Buddha said is just an example, manifesting numberless forms naturally without effort—as impure forms to sentient beings who have an impure mind, and as pure forms to sentient beings with a pure mind.