Aggression
One thing I noticed after coming back from Amsterdam is how aggressive North Americans are (myself included). In Amsterdam, bikes, cars and pedestrians are not aggressive but all coexist happily.
So, I’m working on having that attitude here in North American. I’m working to not get upset when someone slows me down. I’m trying not to get frustrated and blow by someone when they don’t act the way I think they should at a stop sign.
And you know what? I’m in a better mood when I’ve traveling by bike, bus or on foot because of it.