I've been writing about my boyhood, when I was a little kid back on my grandfather's farm where we didn't know about black widow spiders or all that stuff. But writing about that is so easy. ↗
Every writer has his writing technique - what he can and can't do to describe something like war or history. I'm not good at writing about those things, but I try because I feel it is necessary to write that kind of thing. ↗
Writing is fun - at least mostly. I write for four hours every day. After that I go running. As a rule, 10 kilometers (6.2 miles). That's easy to manage. ↗
Writing a really general parser is a major but different undertaking, by far the hardest points being sensitivity to context and resolution of ambiguity. ↗