I found similar going from UK to USA - can-do positive attitude, enthusiasm is appreciated. (This was private sector). This was 20 yrs ago though. Having returned to UK I think its got better here at least in tech. Also if you take a (slightly tempered, not in-ya-face) US attitude back to UK , in the right workplaces this goes down well because people actually like positive enthusiastic colleagues. In the UK it can be hard though getting managers to not see this as a threat. When I first returned the American pro-active attitude I think caused me to bomb an interview because I (innocently and tactfully at least I hoped ;) ) asked what reason they were using technology X and had they considered Y , which I think they took as a threat, someone who'd be insubordinate whereas in the US they'd more likely go "good question!" and be glad someone cared enough to ask (at least in my experience). I behaved the same the following week when interviewing at a startup and naturally, got that job. ;) Since then I think I adjusted to balance being pro-active with careful not to rock the political boat. American positivity has to be seen to be believed. ;). When in the US I was both impressed by people's ability to stay positive in the face of very difficult challenges, but slightly bemused by the amount of unfair s** people would silently put up with too e:g in customer service jobs. ;)