Writing from fact, using a real event, can lend work real emotion, emotion difficult to conjure otherwise. Tears in a writer will bring tears to a reader, so they say.
Writing from fact does have its downside, however. Firstly, a straight account is reportage, not fiction so you must add extra spice and colour to the mixture to make it fiction.
It is important to get to the crux of what your story is ‘saying’ and make sure your narrative never loses sight of this point and – so, even if when you were all driving to the hospital, Brad told a joke so funny you’ve just got to mention it. No, don’t mention it. Stick to the point of the story – the story is the hospital, remember, not Brad’s unrelated joke.
You may also have to leave out years of backstory if it does not serve to drive your own story on in any way. You may have been brought up by the funniest, most eccentric, most loving or most dysfunctional family in the world, but if they have no role in the story at hand, don’t mention them.
Another issue with writing from real memory is that ironically, fact is often too weird and too unbelievable to work as fiction. Your readers will say, ‘oh, come on, that would never happen.’ And you can’t phone them all up and say, ‘actually, it did. I’m not making it up. I once knew this bloke…’ Instead, you’ve often got to tone down the story to make it more credible. Real-life coincidences can be particularly problematic here.
And remember if you stick too close to the truth, you may be setting yourself up for some legal headaches, especially if you are presenting another person in an unflattering light. It’s best to change names and/or genders, and settings. Once you make those factual changes, most people will fail to recognize themselves in fiction, simply because we don’t see ourselves as we are seen by others….