sexual fantasy

BDSM fantasy: will it limit my sex life?

Mari asks:

I have serious problems becoming sexually aroused without fantasizing about certain BDSM-like scenarios. I've been having fantasies of that sort for a really long time- years before I even knew what BDSM was- so I was thinking that my problem might just be that I'm used to these types of fantasies and only fairly recently started trying to use other means to get myself off, so to speak. However, I haven't noticed any improvement with this problem. I really don't want to be this limited in my sexual experiences. Do you have any suggestions for me? I've heard some things about how seeking therapy might help, but I don't know that much about what this would entail.