Buddha attained supreme enlightenment through meditation and then spent His whole life converting sentient beings. The Four Foundations of Mindfulness Sutra teaches a method of meditation to gain no-self, and to enter Nirvana.
Why do we need to accumulate merit and morality before practicing meditation?
Because our blessing is too little, and we are lacking in merit, then we are likely to face obstacles, and our practice will difficultly progress. If we purify our minds, try to do charity, live a generous life, create much merit, we will bring happiness to people.
People who have no enough morality and virtue are easy to make mistakes. Although their retributions have not come yet, they still get worried and un-restful. Their practice can hardly progress. Thus, while practicing meditation diligently we need to keep on with control of minds. It means that we should be modest, and consider ourselves as small as dust so as to destroy arrogance. We also need to be happy when seeing people’s achievement so that we can get rid of selfishness, jealousy or evil.

How can we practice meditation diligently everyday while we have to work for usual living?
Everyday, when we contact to people or work hard or arrange something or take a rest, we should always check our minds and bodies carefully. Our minds need to reside in bodies, and the bodies must be known to be impermanent.
(Keeping the right mindfulness everyday is the most important)
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