Earlier this month I posted a list of possible conflicts, as assembled by Chuck Wendig. Now, Scott Eagan also has some advice on conflict, the - as he calls it - most frequently screwed up story element.
Apparently, what agents and editors see most to mess up the conflict, are three scenarios:
1) The conflict is too easy .
I've frequently started new projects, only to find out that there isn't much meat to the conflict. This isn't only boring for a reader, but also for me as the writer. Where no conflict, there no interest. I usually break these off pretty early on.
2) The conflict is impossible (works only for James Bond ;-D).
I've also managed to write myself into a corner and couldn't come up with a solution that wasn't deus-ex-machina type or needed some drastic actions from my characters that wouldn't have fit either them or the story. When that happens, I go back to the key point where the impossibility is introduced, and try to fix it there. Sometimes, a lot of revision is necessary. Some such projects I haven't finished because it'd be too much effort.
3) The conflict would never happen.
I don't think I've fallen victim to this scenario yet. But I definitely recognize the other two, and voilá - Revelation of the Day.