Well you don't exactly have to go anywhere, if you're feeling confused it might be good to sort your thoughts and feelings out.
If you don't feel right being dominant then don't be, if you're not a natural then don't force it unless you feel you need it.. even then I'd stop and think.
It could be as difficult and tiresome as a person of one sexual orientation trying out another because of pressure and it not feeling right.
It must have been a big step up in a way from being a sub to be faced with having a sub. You just can't assume a forced personality very easily. I for one love it, I adore the feeling of power and I took very quickly to the whole thing. If you're happy with it online but not in real life then it doesn't have to be put in the real world. Maybe explore your feelings with a bit of bdsm literature or some pictures, I don't know..
You'll work something out and I wish you the best of luck!!!
Sorry if this isn't helpful.. I'm feeling tired.