I have been summoned.
A piece of paper is just as inviting as a real invitation one gets from a person. Only that in front of that empty sheet, we are exposed to ourselves, that sheet can become our mirror -- and this, can be mighty scary. So some make it a party, hence the amounts of the aforementioned chit chat. Some feel the need to defend themselves, hence the amounts of quasi-philosophical tantrums. Some are looking for something, hence the hypergraphics.
Yet some dive into that white sheet, as if it were an ocean one can swim in, and the words are the waves that carry us.
Some, of course, snub the invitation.
How do I start writing, where do I get my ideas?
First of all, I don't believe in "creative writing" -- these "creative" theories are trying to make a business out of an art. As if one could safely sit it one's hut and ... write. Certainly, *a lot* can be written this way, but it has a limited range, in all imaginable perspectives, except perhaps volume.
No work of art has ever been made in complacent comfort. Unless one goes out on a limb, little creativity is achieved. This is why art is so scarce.
Secondly, I am not all that fond of writing -- that is *just* writing. Although I am enamoured with the idea of the Book, I must add the visual, pictures, fonts, colours. A haiku tome written in hand and with paintings is my ideal of a book. An original, irreproducable.
The ideas for that -- there is a proverb "A good photographer can find a good motive anywhere". Like I said, I am not that fond of writing, but certainly fond of pictures, and when I think my thoughts in words and sentences, they have to have that snythetic feel as pictures do, a brevity, a character of being made of one strike.
What stirrs someone's interest, and makes them see something as a motive, an idea?
What one loves.
What one hates.
What one is scared of.
What one wishes for.
The ideas one has for writing come form these loves, hates, fears, wishes, ... It depends, of course, how well one knows oneself, and how one wishes to express this knowledge.
Thirdly, when writing a professional text, as for school: organizational mindmaps are the first step, the ideas come from having studied the literature. Ah, long story.