I struggle with this often, I suspect many of us do. When you're in the midst of the battle, it's hard to imagine life on the other side, and when there are no clear timeframes or rules about how it will feel and what it will look like when you get there, it's even harder to hold onto belief in something you can't even define.
As with everything, I don't believe there is any silver bullet. Sometimes we just have to trustin the professionals who guide us on the journey, in the friends and supporters who walk it with us, in ourselves and the faith and survivor instincts that have brought us this far, and in the future...
Sounds all a bit sappy and abstract, but it's all there is sometimes.
Maddog