The kind of person who writes the best narrative is one who simply starts writing and does not stop till they get to the end. For lesser mortals, you need a plan.

A narrative can be anything from a diary, an internet bolg, or a story - fact or fiction.

Diaries often ramble but good ones do not. Likewise for blogs. For a story, before starting you will need to know where you are going. You will need a setting, characters, a theme, and an interwoven plot. Your clever choice of words will set the mood. Easier said than done - so find yourself a writing group!