Position taken for wellbeing as an Australian (5)
I believe the answer is:
asana
'position taken for wellbeing' is the definition.
'asana' can be an answer for 'position' (I've seen this before). I'm not sure about the 'taken for wellbeing' bit.
'as an australian' is the wordplay.
'australian' becomes 'A' (common abbreviation).
'as'+'an'+'a'='ASANA'
Can you help me to learn more?
(Other definitions for asana that I've seen before include "Spiritual position" , "Yoga position" , "Yoga posture" , "meditative posture" .)