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Islam is not a religion in general, but is a way of life. It is a way of believers in all aspects of life. Sufficiency is a doctrine in Islam. It is in line with the philosophy of Sufficiency Economy of His Majesty King Bhumibol Adulyadej, which was given to Thai people. Sufficiency in this context means moderation, reasonableness of the medium, and the need for a healthy immune system to be affected by changes both internally and externally. At the same time, we have to strengthen the basic human mind to absorb moral, the main point. The life style of the Prophet Muhammad of Islam is to take away the lesson of adequate sufficiency, that is, with his doctrines and practices throughout life. He has been the type of true self-sufficiency.