KEEPING IT REAL

One of the challenges I found when writing Helens-of-Troy was how to keep my supernatural characters acting semi-normal in a mortal world.
My first novel, Olivia's Mine, was historical fiction based on fact, so there wasn't a whole lot of room to play around. Perhaps that's why I personally found the paranormal genre a lot more fun.
While the paranormal genre is a godsend for writers who don't like boundaries, I think there are some invisible ones. Since my characters live on earth, I have decided that they need to fight their demons with items found on earth, i.e. there will be no battleships appearing from the sky with a battalion of ghost hunters to help them. But that's just me.
I think one of the reasons the television series "Supernatural" has maintained a huge fan base for several seasons, is the relationship between the brothers. They may lie, cheat and steal, but the bond they have between them bonds the viewer to them as well. This is the relationship I try to achieve with my women in Helens-of-Troy.
I think that the paranormal fan secretly wishes that the heroics of the characters in any book could be done by themselves if they only had a little more power. Not "rule the world" power, but enough fortified energy to see if the irritating neighbour next door really was a demon in disguise. He's hiding something behind those windows he won't wash, and damn it, I'm ready for whatever it is. I just wish I had a heavy shovel and maybe a sidekick to help me.
How do you kill your demons?