Good daily fare protects his heart (10)
I believe the answer is:
charitable
'good' is the definition.
('charitable' is associated in meaning with 'good')
'daily fare protects his heart' is the wordplay.
'daily' becomes 'char' (I've seen this before).
'fare' becomes 'table' (table is a kind of fare**).
'protects' is an insertion indicator.
'heart' says to take the centre.
The centre of 'his' is 'i'.
'char'+'table'='chartable'
'chartable' enclosing 'i' is 'CHARITABLE'.
(Other definitions for charitable that I've seen before include "Inspired by the will to do good for others" , "Kind" , "Benevolent" , "Thoughtful" , "Big-hearted" .)