It's always worthwhile, Sergey. It's surprising how much there is to write about not knowing what to write. It's working: you made almost no grammatical errors, and no punctuation errors.

I've not written for a month or something. Maybe it's because in my life hasn't happened someting special,

Maybe it's because something special hasn't happened in my life, [natural word order, <em>but:</em>]

Maybe it's because nothing special has happened in my life, [+more natural negation form]

but it would be better for me to do writing practice more frequently. Even a few sentences every day (are good for keep myself fit 1. are good <em>to keep myself</em> fit / 2. are good <em>for keeping myself</em> fit). Every time starting a note I'm asking myself what am I going to write about? About work, home, events? I just don't know. Is it an important question when your main goal here is to learn your(I suggest removing 'your' here) writing in general? Although it would be great to express your thoughts in English by doing this without many grammatical and punctual punctuation (- very easy mistake, 'punctual' has a different meaning) mistakes. That's it for today.

Thank you.