Some things that help you write are psychological. For me these have been significant in keeping me writing when things aren't going well. I guess that's the only time you need their support. They are the kick up the back side that says, 'it may not be perfect, but at least it's written. You can worry about the rest later.
The one on the left is my 'standing in a soggy field watching kids football' mug. Its only real purpose is to keep me from freezing to death so that I can write when I get back. The one on the right is my 'just bloody write, will you!' glass, as I tend to sit at my leptop with a pint of water by my side, normally tepid by the time it's drunk.
And this has been my hero, reminding me that whatever I write to get the story down doesn't really matter; it can all be corrected and changed at a later date, but if I don't have anything written down, there is nothing to improve on. So don't fret about the quality of your first draft. The fact that you get one finished at all is a huge achievement in itself.
Wife, mother, lapsed doctor. Hopelessly in love with every hero I've ever written.