I concur with jamesblonde. American culture is very particular in that it encourages bragging and self-aggrandizing as a good character trait. It takes a while

I concur with jamesblonde. American culture is very particular in that it encourages bragging and self-aggrandizing as a good character trait. It takes a while to get used to that when moving to the US. As a simple example a very good friend of mine had issues with interviewing for jobs because she'd understate her achievements. She'd be asked "so what's your experience with Photoshop and Illustrator" and she'd say "well, I've used them a lot and I'm comfortable with them." An American with half her experience would confidently say "I'm an expert." It took a lot of cajoling to get her to be less modest - at least while interviewing.