Thank you for your interesting email.
RHACS tends to emphasis support 'at a distance' for those engaged in a self-administered (and self-disciplined) programme of seated-meditation. The guide books that support this 'mindfulness' practice are those written by Charles Luk (1898-1978) entitled 'Ch'an and Zen Teaching - Vol I-III' and 'Empty Cloud' - the English language translation of the original Chinese language biography of Master Xu Yun (1840-1959) who lived into his 120th-year. Of course, 'mindfulness' is a key Buddhist attribute that expands far beyond the usual limited and/or divergent understanding that currently abounds. If you wish to discuss 'mindfulness' - please feel free to email further.
With Metta
Adrian