How to achieve the state of one-pointed concentration(GDD-118, Master Sheng Yen)

"All Buddhist sects in China advocate recitation of Buddha's name for it is the simplest method for spiritual practice, which is proven to be effective to the greatest number of people and has been most commonly used. Buddha-name recitation brings numerous benefits: spiritual response, protection from Dharma-protecting deities, elimination of evil thoughts, peace of mind and body, benefits in the present life, rebirth to Amitabha's Pure Land.
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