Fundamental Attribution Error: They Are Impatient, You Were Late
The same behaviour gets explained by character in others and by circumstance in yourself. The asymmetry is not mainly self-flattery — it is what you can and cannot see.
Topic
Psychopathology
Cognitive Dissonance: The Belief Moves Because the Action Cannot
When what you did clashes with what you think, one has to give. The action already happened and the belief is private — so people end up sincerely believing whatever justifies what they did.