What are some examples of self-serving bias in real life?
Self-serving bias is quite easily observed in real life. For example, if I am late for work, I might easily blame the traffic, a slow driver I was stuck behind, or having to wait for a passenger. If I am on time, I might congratulate myself for planning ahead and taking account of possible hold-ups. In both cases, my self-esteem is preserved.
The old saying “a bad workman always blames his tools” is another way of stating at least part of the self-serving bias. The other part is taking credit when things go well.