Answer by Suminda Sirinath S. Dharmasena for Losing in thought and autopilot kicked in

Is it really a mistake to be lost in thought?

When Satti is absent you create fabrications hence future misery. Therefore, it is a "mistake" to be lost in thought.

Is my way of countering have bad effect?

You are doing Kayanupassana hence this is one of the solution is being mindful, i.e., mindfulness of the body. In addition be mindful of the bodily sensation when moving like the fabrics touching your body, the wind sweeping over your skin, etc. Also look at muscular pains and pain and pleasure in changing postures.

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