"Vipassana" by Sayadaw U Tejaniya
(Sayadaw teaches vipassana or "insight" meditation. The introductory section on vipassana at the beginning of "When Awareness Becomes Natural" is relatively brief. So here is an overview selection of read- ings on vipassana practice, especially in relation to samatha practice, taken from throughout the book. In WABN the introduction to vipassana and samatha, as the two ways to develop samadhi, is on pp. 20-25.)
In my youth, and later when experiencing depression, I didn't practice gentle awareness because I knew it would work. It was just that I was so helpless at the time. I was in so much depression it was the only way I could practice. The mind was too tired to do any more than that.
Another reason we find it hard to practice in daily life is that we put in so much personal effort that it is not sustainable. Personal effort feels like you can only be aware or, lost in the work you are trying to do.
But with gentle awareness, although not continuous in the beginning, it soon gains momentum to become natural and continuous. It really feels like you're aware while doing everything. You are actually living in this awareness.
That is when I understood the true nature of vipassana meditation and started to believe it possible to become enlightened in daily life.
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There are two kinds of meditation. In samatha (calm abiding), you need to sit and be still. My emphasis is vipassana (insight meditation).
For vipassana practice, sitting is not necessary. The purpose of practicing vipassana is to cultivate wisdom. We cultivate wisdom to understand, to see clearly, to know.
[A calm and stable mind, samadhi, can be developed by either samatha practice or by vipassana practice.]