There was a moment when I changed from an amateur to a professional. I assumed the burden of a profession, which is to write even when you don't want to, don't much like what you're writing, and aren't writing particularly well
Now I am old-fashioned. A woman, I consider, should be womanly. I have no patience with the modern neurotic girl who jazzes from morning to night, smokes like a chimney, and uses language which would make a billingsgate fishwoman blush!
It's no good starting out by thinking one is a heaven-born genius- some people are, but very few. No, one is a tradesman - a tradesman in a good honest trade. You must learn the technical skills, and then, within that trade, you can apply your own creative ideas, but you must submit them to the discipline of form.
God bless my soul, woman, the more personal you are the better! This is a story of human beings - not dummies! Be personal - be prejudiced - be catty - be anything you please! Write the thing your own way. We can always prune out the bits that are libellous afterwards!
It is the quietest and meekest people who are often capable of the most sudden and unexpected violences for the reason that when their control does snap, it goes entirely. (Hercule Poirot)
Crime is terribly revealing. Try and vary your methods as you will, your tastes, your habits, your attitude of mind, and your soul is revealed by your actions.