I've had an idea for a novel in my head for around 8 months now. At the start I thought it was too ambitious/difficult/complicated for me to write, considering i've never written a novel before. I actually tried to write it mid this year- ended up writing a 30 000 word first draft of a novella that had some of the story, but didn't convey everything I wanted. After that, I thought I was done with the idea. But it has come back, and it is as clear as ever in my mind. Is this an indication that I must write this novel ? Have other people who have written novels experienced similar things?