When you face your fears, have senior party thrown out (8,7)
I believe the answer is:
aversion therapy
'when you face your fears' is the definition.
I can't tell whether this defines the answer.
'have senior party thrown out' is the wordplay.
'thrown out' is an anagram indicator.
'have'+'senior'+'party'='haveseniorparty'
'haveseniorparty' is an anagram of 'AVERSION THERAPY'.
Can you help me to learn more?
(Other definitions for aversion therapy that I've seen before include "Behaviour modification technique" , "Type of treatment" , "Medical treatment" , "addict's treatment" .)