How do you know it's time to stop?

I've been struggling this year to come up with something...anything. Each time I think I might be able to sit down and write, I can't seem to keep my own attention long enough to get anything done. I have no idea what's wrong with me, but is this a sign that I just need to stop writing?

Of course my heart screams at the thought, but what else am I to do? I know I'm not a great writer. Good writer, maybe. Perhaps I am just at a turning point with this whole endeavor. Maybe the spark has left me for the time being. Whatever it is, I just want it to go away and let me dive back into my fantasies and whimsical worlds that exist inside my head. 

I don't think this is writer's block. If it were truly writer's block, I wouldn't have any ideas swirling inside my mind; waiting to be released. No, this is something else. The last book I wrote was good. I don't mean good by only my own thoughts, I mean good from those who've read it and flooded my inbox with "OMG" emails and "I want more!!" comments. I have inevitably set myself up for failure!

How can I make the next book better than the last? How can I keep the story going for two more novels, knowing exactly how I want it to end, and not have the books drag on forever and hold absolutely zero interest from my readers? How?!

I am stuck...plain and simple. I have no good answers for these questions. Instead, I've been staring at the same boring words I've written for a story that is supposed to be exciting and suspenseful. Love, war, betrayal, redemption and duty molded together and topped with a pretty little bow. How the hell am I supposed to make it all happen and not feel like every word is complete and utter crap-ola?

Any suggestions?


xoxoxo
Lisa