Well, in Sweeden you can't go out and enjoy your country in Winter, it is just so cold and dark to do anything but stay indoors, read a book,play and instrument

Well, in Sweeden you can't go out and enjoy your country in Winter, it is just so cold and dark to do anything but stay indoors, read a book,play and instrument, play computers...all artificial things, specially after working in front of a computer for hours. This will make you go out of balance or you will burn out. My advice is for you to take a month or so and travel in Winter to other countries if you are young. Go to Argentina, it is now summer there, or Indonesia, or Morocco. Making apps means you are free to travel and even continue working. Your money is worth 20x more or so in Argentina than Sweden. Usually you could stay out of your country 6 months or so without fiscal problems. If you try it odds are you won't believe how you could live without it, but start small taking one month out at first. I did it myself because I also started creating software. Now traveling the world is routine and for me staying in places like Boston, Chicago or Sweden in winter does not make lots of sense.