I published my first book in the 90' to test how far you can move forward in literature,
Next book - economical dose of grotesque - demonstrates a wide set of teeth,
Third publication - simple and communicative poetry -
narrows malicious mouth of pathetic and sluggish graphomania everytime.
Successive one - e-book - demonstrates possibilities of time.
But
There are other apparently invisible books...
I still read new, coloured chapters driving a car across Warmia - my native region.
You need not write thick books to understand how to move forward in literature.
The most important is fuel.