I have discovered in my writing journey that one of the most valuable tools I have is a critique partner who is BRUTALLY honest with me. If something doesn't work or if something is overwritten or she just doesn't get it, she has no trouble at all telling me about it. We argue sometimes, not subtle bickering, but really full-blown discussions, until we have managed to work out whatever the problem is.
I have discovered that many young writers just can't take this sort of honesty. They refuse to listen to anyone else and stick to their vision of their work. Which can be a very good thing, unless your vision needs glasses! (and sometimes a seeing eye dog!)
For me, if something isn't working I want to know about it. Do I change everything just because my CP says so? Ask her and you will get a resounding "He** NO!" But I do listen and everything she says to me makes me think. And maybe that is the greatest gift someone can give you - the freedom to think.
There will be other relationships on every writer's journey with agents, editors and even critics. How much honesty do you want from those people as they come into your life? How much is too much honesty when it comes to your writing? And are you grounded enough in what you write to listen to a vastly differing opinion and still stay true to your voice?