A question for John and any professional novelists out there:
I'm curious about the practicalities of becoming a professional author. When do people typically give up the day job?
I work 9-5 as a technical writer myself, and I find that the best I can do in the evenings is about an hour working on a novel or short story (and that's on a good day).
This means that my output is building at a snail's pace, and makes me wish I did not have a day job. But I have to make a living, so there is no option.
Mr Tagomi - I can only emphasise what Mark's said above. In fact the only reason for adding my tuppenceworth here is that your situation and mine are very similar.
I'm also a full time technical author, and I have to fit the fiction in where I can manage it. Fortunately for me I work in a city centre with lots of cafes, so I'm able to enforce a daily routine of getting up to an hour's writing in before work begins at 9am, and another hour at lunchtime. In addition I'd say I also do an hour or so on average in the evenings and 3-4 hours on Saturdays and Sundays.
I do manage a certain amount of social life, and I get to exchange pleasantries with my partner almost every day, but as Mark says, you have to be prepared to make time sacrifices when you're running the 9-5.
Can I see myself giving up the day job? Not any time in the near future, maybe never. Even if John manages to sell the book I'm working on, the finances just wouldn't work out. The one thing I would consider, should a deal similar to Mark's land on my lap, is cutting my hours to four or three days a week. Perhaps your employer would be open to that suggestion?
There are drawbacks to working in such a piecemeal fashion, not least of which is keeping the continuity of your book in your head, and even an extra day or two that I could use 100% for the writing would make a huge difference to the pace at which my fiction gets done. But until I'm getting paid for it, even that's a non-starter for me.
Of course, all of that is dependent on the little life luxuries that you could or couldn't live with out, but in most cases a roof, food and a little spending money has to come from somewhere.