Another fun way to create conflict in your story is one you may have heard before. If you have, it's okay, hearing it again won't hurt you. ;) If you haven't, this is going to change. your. life. Or at least your writing life. Or your Friday afternoon. Something, anyway. =)
Think about your main character.
Think about the LAST thing they would do. Ever. Ever. Ever.
Now go make them do it.
Write a scene where your character does whatever it is that they would NEVER do. Even if you don't like it (but you probably will, believe it or not!) and don't want to include it in your story for real, just having written it will tell you a lot about your character and will bring up more conflicts so rich you'll be amazed. =)
So why are you still reading? Go! Write it! Then pop back and in and let us know if you like it--will you keep it to use in your story? Did it drive you crazy? Have you done this before and what did you think then?