A guy that writes a book because he wanted to

The movie starts (or at least thats what I remember ) with a 20-30 year old guy or student sitting in his living room or bedroom and wants to write a book but nothing comes out. He drinks one or more cups of coffee and he is a bit desperate and then suddenly he starts to write and writes the whole book during the night. And thats I think the only thing I remember, besides that I liked the movie. I´d say the movie is from early 2000´s and I don´t remember any worldwide famous actor being in it.