It's only worth thinking about problems if you're trying to understand them. Defining a problem is useful; dwelling on negative emotions is not.
It's far better to think of solutions or to reframe your perspective -- what opportunities does this "problem" unlock?
This is something I faced when I moved to Buenos Aires. Everything was different and therefore everything seemed like a problem. But I adapted and discovered new ways of doing things, new habits. This was a struggle at first, but, looking back, the struggle and eventual adjustment made my time there interesting and memorable. I think that's what it's all about.
P.S. It's full on Fall in Rio now. The weather has gotten slightly cooler and cloudier. The days are short. And it seems like everyone is coughing and sneezing. I have 20 days left here but I already feel like my mind is elsewhere, thinking about what I'm going to do next.