The most appropriate treatment for this isĀ Cognitive therapy
The main purpose of a cognitive therapy is to alter someone's negative outlook and transform it into a postivie one.
Unipolar depression is caused by purely psychological reason (not related to hormone) which makes the victim view everything in their life is pointless and caused them to loss interest in everything that they're doing.
AUnder this circumtance, altering the view will dramatically change theirpsychologicall state