Unfortunately most don't actually appreciate the ins and outs of the life of a writer. For example, a survey by the Authors Licensing and Collecting Society recently discovered that the average full time writer in the UK earns less than £12,000 ($18,670) a year from their writing.
To put that in context, according to the Joseph Rowntree Foundation, the minimum income that a single person needs to live in the UK is £16,850 ($26,225). That goes up to £19,400 ($30,200) each for couples with children.
According to a survey carried out by Digital Book World earlier this year, almost a third of published authors make less than £320 ($500) a year from their writing.
But money isn't the only shock awaiting potential writers so after asking around my writing buddies, I've put together a list the top tips we wished we'd known before embarking on a career in writing.