Who told ya that rat , your pal Vinny Kearns, or your buddy in main St swords ? I'm utterly convinced your on the books. Come to think of it , Ken is a buddy of the bould Mr Kearns as well
The psychological term would be Self serving bias.Depression and the Self-Serving Bias
Sometimes when people are depressed or have low self-esteem, their attribution style is flipped.
They attribute positive events to chance or external help, and attribute negative events to their own character.
If someone is feeling irritable, they might attribute negative events to a combination of internal and external factors, (i.e., "I suck and everybody sucks.").
But yes, the rank expression would be hungry pox.