When you live with someone, you can't help but be affected by their moods. For a writer, this can be a problem. If they are driving you nuts, it can keep you from your writing, or make you so uptight that you can't concentrate.
You can't get into your novel when someone else's grumpiness is crowding you. Or if you are writing humour, maybe someone else's joy can overshadow your fun. Moods create atmospheres. A lot of writers do things like putting on certain music to help create the writing atmosphere they want. But when the house is grumpy ... it takes a lot of willpower and the ability to shut out everything and everyone to write what you want, when you want.
Luckily, I've had lots of practice.
Another 800 words today. Total for the week since Monday? 6,800. That's because I decided to do the 100 x 100 (100 words for 100 days) from the YA writers' list I'm on. And when possible, stretch that 100 words to one hour of writing.
So far, it's going OK. Onward and upward.