It's not ruined, by any stretch of the imagination! It may not be the best thing you've ever tasted, but it just might! Experimentation and taste-budding are two of the awesome things about brewing your own.
Even if you don't like it, there's a darn good chance that someone you know will think it's the nectar of the gods, and will drink every last drop. Worst case scenario for you: you have a darn fine beer that is a little too hoppy. Still a pretty good outcome!