nomorecurries wrote:What I really like about the nostril approach is you can use it in day to day life walking around which helps keep you present (it is much more difficult to feel abdomen when moving around)
You're not supposed to be aware of the abdominal movements when moving around. You're supposed to be aware of the movements of the limbs when moving around, specifically the movements of the feet. Contemplation of the abdominal movements and the movements of the limbs is paying attention to the element of motion (vāyo dhātu),
which is the section in the Satipaṭṭhāna Sutta called attention to the lements (dhātumānasikāra).
It is not mindfulness of breathing.
Noting the abdominal movements is just one of many objects of awareness. It is called the primary object, but that applies only to sitting meditation. If other objects intrude, such as wandering thoughts, pain, sounds, etc., they become the object of contemplation at that moment. After noting the secondary objects until they disappear, one can resume noting the abdominal movements. After some days of practice, noting will become semi-automatic through repeated and diligent practice.
The mental noting is nothing but initial application (vitakka),
which pushes the mind towards the current object to be contemplated. In the Satipaṭṭhāna method, the meditation object is constantly changing throughout the day. All four foundation of mindfulness must be embraced: the body or physical phenomena, the feelings (both physical and mental feelings), consciousness (seeing, hearing, etc.), and mental states (sensual desire, ill-will, sloth, restelessness, doubt, joy, energy, concentration, etc.)
If you have time, read at least some of "In this Very Life," (the link in my signature) before you go (it may be too much to try to take it all in within a short period). Read at least Practical Insight Meditation.