@ inflib: What you describe is a mixture of satipattana and anapana bhavana. It removes defilements and thus it is kusala kamma. This should be done the whole day. After a while one will get rid of craving for various things (ragakkhayo Nibbanan). With metta bhavana one will ged rid of hate (dosakkhayo Nibbanan). With learning and comprehending the Buddha Dhamma incl. tilakkhana one will remove ignorance about the true nature of this “bigger world” (mohakkhayo Nibbanan).
A Quest to Recover Buddha's True Teachings