Thank you all for answering my question.

to Forrest
You need to quit your job and start writing Christian books and novels, since you know the Greek language so well

I wanted to say that one time, I started fasting a long time, a very long time. Whenever I fasted, Saten was trying to send me temptations, but God helped me defeat the temptations. Durring the fast and some time after the fast, it seemed to me, that I did not sin at all. (This includes sinning through thoughts). Especially after the fast, for some time, there wasn't even a bad thought that came to my mind. You know, I did not think selfish, but rather, I felt like I need to go out to the world, make everyone's life good and make everyone peaceful.

I heard other people say that it's impossible to go one day without sin. So this is why I asked this question.

Once again, thanks to all for participating and I have received an answer to my question.