Troubled soul? Obtain forgiveness (10)
I believe the answer is:
absolution
'forgiveness' is the definition.
(thesaurus)
'troubled soul? obtain' is the wordplay.
'troubled' indicates anagramming the letters.
'soul'+'obtain'='soulobtain'
'soulobtain' with letters rearranged gives 'ABSOLUTION'.
(Other definitions for absolution that I've seen before include "acquittal" , "Forgiveness" , "Release from guilt" , "pardon" , "discharge" .)