The difference between Mahayana and Theravada Buddhism is that the former emphasises attainment of Buddhahood for the benefits of all sentient beings, while the latter focuses on self-liberation.
One key practice method of the Theravada Buddhism is the four foundation of mindfulness, in accordance to the Satipatthana Sutta.
For the Mahayana Buddhism, the highest aspiration is to achieve Buddhahood. The Lotus Sutra expounds this ideal. In fact, there is a realisation that when Buddhahood is achieved, nothing is achieved, where the mind, Buddha, and sentient being are said to be one.
However, in this day and age of great distraction where achieving Buddhahood may seem like a lofty goal, the only practice one needs is the Amithaba's name recitation. Accordingly, keeping this practice allows one to reach the Amithaba's Pureland at the point of death. This can be considered as a way of liberation. But the uniqueness of this path is that one can still return to this world to lead others out of Samsara after dwelling in the Pureland. This is also known as the nianfo practice.
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