When sitting, you just sit. It sounds so simple, but the exercise becomes quite considerable particularly when you try longer sittings.
From what I've learnt, you sit and allow all sense gates to enter a state of calm awareness without letting any become intensively overloaded, especially if this sense is the Mind, the great pilot of this human skeleton.
While meditation practice should not be orientated towards Enlightenment nor self-improvement, there is certain aspect in self-improvement which helps to get rid of the self. Though my question is, when is this dangerous as in "creating or feeding the ideal of illusory self" which will then just prolongue suffering? Maybe this is just the way it should be. A positive well-round self-concept will more likely engage in constructive thoughts which will lead to mindful acts in real life. Then, someday, just like from what I understood the Bodhissatva Path "project" consists of: when we are all "freed" or aware of this freedom, we can drop and renunciate and reach the other Shore completely.. but, to then re-start this cycle again?
If it is infinite, then why to completely renounce, why not simply continue on the path accepting certain attachments which are intrinsic to human nature, while accepting the Four Noble Truths?
This is why I sometimes like to understand zazen in terms of metacognition.
"Metacognition is, put simply, thinking about one’s thinking. More precisely, it refers to the processes used to plan, monitor, and assess one’s understanding and performance. Metacognition includes a critical awareness of a) one’s thinking and learning and b) oneself as a thinker and learner."
This aspect has definitively helped to be able to continue following precepts and wholesomeness.