Critiquee:
Yes, you have your own voice. Trying too hard to write to other people's tastes will probably result in stiff, derivative prose. But it is easy to fall into the trap of dismissing rephrasing suggestions or vague notes like "awkward" in the name of voice. Your voice requires development, just like every other aspect of writing - it doesn't spring forth fully-formed and gleaming with glory. If you are too inflexible, you won't learn what does and doesn't work.
Unfortunately, it is really difficult to see these things in the moment. There have been instances when I am so unaware of how the words play outside my head that I pig-headedly ignore the excellent advice of my excellent critique group - only to flinch at the awkwardness during a later reading.
Time and multiple critiquers will help. Give yourself plenty of time between writing and rewriting so that some of the puppy-love can wear off. When you do sort through your notes, pay close attention if multiple people comment on the same thing or you have a strong negative reaction (I find when I read a comment and immediately want to scream
WRONG! it is either abhorrent to my soul or absolutely spot-on). Consider every note seriously. You might still reject them, but at least you took some of the emotion out of the decision, and that's usually the best you can do.
If you do find your text devolving as you work in suggestions from other people, you might need to give yourself permission to disagree. You have to have confidence in yourself and your words, enough to know whether a comment rings true to you or not. Sure, you run the risk of making the "wrong" decision - but this is art! It cannot be designed by committee, and it will not be yours until you learn to take risks.
*I want to send a special thank-you to my current writing group, the Cloud City Wordslingers. I am extraordinarily lucky to be a part of a group with such talented and dedicated writers. My work would suffer enormously without their feedback. And if they were the only critiquing experience I had, these posts would probably not exist!