I think the thing that helped me most was simply to learn more about English (I am a native English speaker) so that I could get an understanding of consistent

I think the thing that helped me most was simply to learn more about English (I am a native English speaker) so that I could get an understanding of consistent tense, tone, narrative etc. I suspect there are good general books on English writing but now I have learned how to write better, I can't believe I found it so difficult before.