I fear this is a common problem.
Some strategies I have adopted to overcome this include:
- Writing in the park (or the cafe in the park): so long as I don't take a newspaper, this one works pretty well.
- Writing the word 'notes' at the top of any document I'm writing on (whether on the computer or longhand). Ridiculous, I know, but somehow this soothes the demons inside - the ones that whisper at every line 'well that's not very orginal/insightful/interesting'. It doesn't matter, it's just 'notes'!
- Not giving my characters names. What? I hear you cry. And rightly so. I find that writing scenes with 'man' and 'woman' as characters is really helpful. Otherwise I sit there for hours going 'but is he a Tarquin or a Tito' and working out cultural baggage therein. So I'm a convert to this now. (And I read somewhere that Pinter writes using A and B when he starts, so I'm in good company on this, even if this is where the similarity ends.)
Er. That's it.