Achara means Precept, behaviour, rules of good conduct. (Glossary for the Vahinis)

You are listening to Me and what do you get when you so listen? You agree that I am giving you anandam, is it not? Well what do you give Me in return? Give Me the acharana of what I am telling you; practise what I teach, that is enough. That is all I ask. (SSS Vol.3, p. 90)

Remember, that Bhagavad Gita, Bible, Quran, Granth Sahib and other holy scriptures are not intended for ‘Parayana’ (mere recitation). They are meant for Acharana (practice). It is not a sign of Bhakti-devotion, if one memorises all the 700 verses of Gita or gives learned commentaries thereon. It is only a proof of ostentation. To-day what the world needs is men of action - Achara Maanavas, and not men of words in human form - Akara Manavas. (ICS , pp. 153-154)