Mindfulness is a word that always comes up when reading explanatory manuals or books about meditation or yoga.
This corresponds to the word “sati” in the Buddha’s meditation method.
Do you know how to actually use them?
For example, try concentrating on your breathing.
breathing in
breathing out
taking short breath in
taking short breath out
taking long breath in
taking long breath out
I breathe in feeling it with my whole body.
I breathe out feeling it with my whole body
(MN10 Kayanupassana-Anapana bappam)
This constant, uninterrupted focus on your breathing eliminates delusions.
This is “sati“.