Believe it or not, that's a good thing. Struggle -- and then give up. It can lead to a major breakthrough.
As I wrote in Top Ten Writing Tips To Help You To Write More:
In his book The Breakout Principle, Dr Herbert Benson (who also wrote The Relaxation Response) describes a struggle/ release process that leads to a new level of awareness. When you struggle, and then completely give up the struggle -- just give up -- there's a chance that you can achieve a peak experience which leads you to a new level of functioning.
But it works.
Try that the next time you're struggling with a writing project. Say to yourself: "OK. That's it. I give up."
Breakthroughs happen when you least expect them.