The term 'Emotional Hoarding'  seems to have slipped into our vocabulary.   It is applied to those who never let go of any slight in the past.

However, the issue is not just the person wallowing in his pity, but his attempt to blame and castigate and punish those he finds 'guilty' of causing his failure.

He may be a victim, in some senses,  but is trying to make others his victim.