I'm suffering from severe writer's block and get stuck in the middle of my books every time I write. Then I never finish.
There are 7 steps I think are usseful when creating an outline:
1. Craft your premise
2. Roughly sketch your scene ideas
3. Interview your characters
4. Explore your settings
5. Write your complete outline
6. Condense your outline
7. Put your outline into action
Hope that helps!