I am not a writer myself, but I know several novelists. Some of which considered successful - i.e. they published several books which sold well and got payed h

I am not a writer myself, but I know several novelists. Some of which considered successful - i.e. they published several books which sold well and got payed handsomely for it. None of them works as a novelist full time, because they would have never been able to cover their expenses. Your chances of success (where success == making a living out of it without needing to keep another job) might be even lower than for indie game developers...