To deepen in concentration, we need to be willing to recognize whatever disturbances or hindrances might be present, however subtle, and to work with them skillfully, ultimately to release them. This allows the mind to settle to the next level of stillness. This talk is based on practice as described in Majjhima Nikaya (2), the Cula-Sunnata Sutta, The Lesser Discourse on Emptiness.
Through developing the jhana factors of piti, sukha and ekaggata (delight, contentment and one-pointedness) we can open a deeper ability to absorb with our breath.
There are many aspects and dimensions that are part of what we call concentration. Rather than take a fixed view of what your concentration practice is supposed to be like, why not take a tour of the neighborhood?