It definitely IS possible to learn all this. I did back then in school, got my grades, spent a lot of hrs in so doing. After so many years of a "Russian-hiatus", I'm getting back into the language. Right, there are some areas where I have to "re-learn" how to wane off the "English/German/..."way of thinking - but I love it.

Try taking some Turkish lessons: Words get long, look weird etc.
German language, anyone? You have to learn the "gender" of a noun by heart - there is no logic to that;
English? It might be easy on the surface, but difficult if you try to excel in academics (finance/law ...) or in other areas where quality matters. (same for Russian, IMO)
Russian? IMO, it's one of the logical languages for me to learn. Right, it's not ALWAYS logical - there are things that can be cumbersome for a non-native like me. But at the end of the day, it makes sense.

It comes down to whether you're willing to learn it or not. I wouldn't say that Russian is more difficult than English - or vice versa.