To be or not to be?

There are moments in one's career, inflection points, where people's opinion of you are formed, careers are made or broken, and decisions truly matter. Unfortunately, I just had one this morning, and I royally fucked it up. Rarely do I want to retract a past conversation as badly as I want to now. Unfortunately, I don't even know how I let it get to this point, it all happened so quickly. I think it's the first time that I've yearned for the simpler days at M, where I did not have to face situations as I do now. Things weren't easy then, but it was straightforward how to build one's career. Where as it's not clear to me now what to do next. Never do I feel as old as I do now - being all of twenty-seven I feel I am no longer a naive fresman when it comes to navigating the labrynth of the professional world and should know a hell of a lot better. But I don't. Damn my ignorance.

Before me lie two options - one to be the country PM for T/H, where I am in essence driving all the product strategies and decisions for these two markets, the other to be an international search PM, where I run and maintain the system that improves our core product for all intl markets. It's very much a depth vs. breadth tradeoff, and unfortunately while I committed to the intl one, I am very much having second thoughts now. Unfortunately now that I've committed to both my managers I don't see a good way of backing out of this w/o a major hit to my professional credibility. I don't want to appear fickle, indecisive, and frivolous, and yet by changing my mind within 24hrs I manage to achieve all three. I really wished I had thought through carefully before I made my decision and spoke up about it, unfortunately I did not get a chance to reflect and seek some senior advice until today. Which has really made me change my opinion a whole lot, albeit a bit too late.

Unfortunately, I am where I am now. No point in bitching about how stupidly I handled myself up to this point. What to do next? Should I continue on my current path? Should I speak up and announce a change of heart? Despite talking with some friends, ultimately it is my and only my decision to make, and now I understand the terrifying pressure and loneliness of choice and consequence. Only I am responsible for me and what happens to me, no one else. Wasn't that what aging was supposed to bring? The type of self assurance to handle oneself confidently and competently in such situations? Why do I still feel so clueless and inept?