Are you conscious on the fundamental attribution error?
Shortly told, this is our tendency to explain other peoples failures by their inherent qualities, while we blame our own failures by situational explainations.
We don't know all factors which lead to other peoples failures, and we are less interested in making excuses for their behaviour.
For our own failures on the other hand, we have knowledge of things that prevented us to succed, and we are very interested in protecting our self-image.
"If other people fail, it is because people are idiots. If I fail, it is also because other people are idiots" :P
This is one of those errors of thought that are easy to understand, but hard to adjust to. We are constructed to think less of others and more of our selves, and I also think this dynamic is useful for society as a whole. If we where always conscious on why people do what they do, we might start making excuses for harmful behaviour, or we'd lowered our standards so much that the world would stagnate.
What do you think of this?