Moscow winter in December is cloudy, cold and dark.

I am lying on the bed with the/a flu. This whole week is wasted. No works, no friends, no positive emotions. Only a throatache (лучше - "sore throat") and headache. High temperature and muscle's pain. But I am sure that the flu will gone away. I will conquer it. I only need to wait some days and everything will be ok. Usual life will come back. I believe in it. It will be Christmas soon. And a little later the new year will begin. New wins (лучше - victories) and new defeats. No matter. It is real life which fulled itself by Life(?? не совсем знаю, что вы имеете ввиду здесь).

Be careful - although it is possible to write without grammatical subjects, many of the sentences here are incomplete, and sound like they are missing something.  For example:

"High temperature and muscle pain." <- not a complete sentence.  You should say "I have a high temperature and muscle pain" - although we understand by context you are speaking about YOUR temperature and muscle pain, it is still important to write these things in order to sound natural.  :)

Moscow winter in December is cloudly, cold and dark.

I am lying on the bed with flu. Whole week is broken. No works, no friends, no positive emotions. Only throatache and headache. High temperature and muscle's pain. But I am sure that the flu will gone away. I will conquer it. Only need to wait some days and everything will be ok. Usual life come back. I believe in it. It will be Christmas soon. And a little later the new year will begin. New wins and new defeats. No matter. It is real life which fulled itself by Life.