Old fashioned counsel given by good man in wood is doom (10)
I believe the answer is:
predestine
'doom' is the definition.
(doom can mean to determine someone's destiny)
'old fashioned counsel given by good man in wood' is the wordplay.
'old fashioned counsel' becomes 'rede' (historical term meaning to advise).
'given by' says to put letters next to each other.
'good man' becomes 'st' (abbreviation for saint).
'in' is an insertion indicator.
'wood' becomes 'pine' (pine is a kind of wood).
'rede'+'st'='redest'
'redest' going within 'pine' is 'PREDESTINE'.
'is' acts as a link.
(Other definitions for predestine that I've seen before include "Foreordain" , "order beforehand" , "decree in advance" , "Determine in advance" .)