Patrick wakes up one morning to find that he has developed an enormous pimple right on the end of his nose. all throughout the school day he is absolutely sure that everyone is staring at the blemish, when in reality almost nobody cares enough about it to even look. patrick's certainty that he is the focus of others' attention demonstrates

I believe the answer is: imaginary audiences
Imaginary audiences refers to a situation where an individual use their imagination to create audiences that would enthusiastically paying attention and appreciating everything that he/she is doing.
This process is very common to appear during adolescent years when people started to develop the desire to be accepted by a certain social group.

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.