I like writing rows. That's good, because they're dramatic and usually trigger crisis moments. But they're also bad, because I then want to write the main character doing a lot of poor little me and feeling sorry for herself.
I also like writing bad men. This is a tricky one. I find my 'bad' men attractive and am appalled when people only see the negative side of them. I have to work at making my negative characters more rounded and appealing.
I have a terrible tendency to make my main characters a bit wet and feeble. I have a BIG sticker on my screen saying Positive People Planning with Purpose and that's helpful - I no longer have to do so many rewrites. But the tendency is still there and I have to fight it, and then check carefully for it in the rewriting process.
I'm a big fan of extraneous words: that, just, really are my top three. I don't fuss about it when writing, just use the Find and Replace option at the end.
I should have been born a Victorian, as I like both melodrama and sentimentality. Both are fine in very small doses, but I have to watch my writing to check that they don't take over.
So, those are my problems. What about yours?