sibireus, i hate to be the first to reply to your cry for advice, because i HAVE been in your situation (minus the linguistic context) and i DO understand and empathize more than you realize. oh, wait, i guess i should say "realise" for you, but i know you already know i speak american english.
regardless, here's my honest-to-goodness advice for you:
never stop thinking about who you are, now that you are aware that who you are does not automatically fit the norm you're being asked to fit. that in mind, bend to be ABLE to fit the norm, but retain the real you. do the things you enjoy, but try - and i should have done more of this when younger - to culture the capacity to focus on a boring task longer, or to force yourself to practice the native tongue there in norway. find a friend to coach your language. i've had two romanian girlfriends, for example, who loved me to death for my way of helping them find the right words for random things in english.
while you try to learn to bend to fit their mold, ask yourself whether it's something you want to continue to grow. think of different aspects of yourself like different crops on a farm. you may want to allocate more space on the farm to things you like, but it may prove more practical in your future to allocate more space to other things. often times, expected and desire for internal growth conflict.
at 16, it's more like "all the time" than "often times."
you sound exactly like me. when impassioned about my work, i'll do amazing things. when i have no emotional desire to do the work, it comes out tremendously mediocre -- and did i mention i put that stuff off until THE VERY LAST MINUTE?
i bet it sounds familiar. are you an only child? not only do your parents seem close-minded, it sounds like you have a doting mother. learn to zone her out when you can or emotionally have to. learn to go through the motions that show them respect but to keep enough self-respect to let go of it when they do or say something that bothers you -- their control over you diminishes as you age and you'll feel better over time.
it also sounds to me like they're afraid they'll lose some aspect of their previous culture if they start doing trendy modern things. i don't know if that's got anything to do with you or the issue, but it's definitely a feeling i'm getting in response to your bit about your parents.
anyway, here's the summary:
metacognition is what will carry you through this awkward part of your life. you know some of your internal processes; now get really familiar with all of them: how do you think when you think about things? not about the things themselves, but about your style of thought. how do you allow your emotions to guide your responses to things? etc. learn when and how to manage these things appropriately and you'll be able to better fit into the culture there (let's face it, half of you wants to and the other half doesn't want to make the effort but still recognizes the reward of fitting in).
best of all, good luck, and nice meeting you here.
~ dan ~