Above all, a book is a riverbank for the river of language. Language without the riverbank is only television talk - a free fall, a loose splash, a spill.
In the compact between novelist and reader, the novelist promises to lie, and the reader promises to allow it.
No one can teach writing, but classes may stimulate the urge to write. If you are born a writer, you will inevitably and helplessly write. A born writer has self-knowledge. Read, read, read. And if you are a fiction writer, dont confine yourself to reading fiction. Every writer is first a wide reader.
I can't claim to be disenchanted "with the current state of fiction" because I read so little of it. My reading is mostly drawn to history.