This is when I could use a bit more self confidence.

I don't believe in ghosts. Or leprechauns, although I do believe in the rights of Irish little people to wear green and not be judged for it, or chased, or caught in large novelty butterfly nets, or forced to eat breakfast cereal featuring ethnic stereotypes.  I also don't believe in psychics, or mediums, or fate, or destiny, or signs from God/the universe. Basically, I don't believe in magic. 
This would all be well and good, if there weren't a sound behind me every time I turn my back.  Because as much as I don't believe in magic or the supernatural or anything like that, I also don't believe in my own infallibility. 
So basically, I don't believe there's a ghost behind me, but I've been wrong before, so....