"In meetings, you sometimes say things that don't need to be said."
The day I received that feedback was a big turning point for me. I made a decision to be more aware of my motives for speaking: Was it mainly about justification (of my presence in the meeting, or even the team), or was it mainly about contribution (to the greater good of all concerned)? Every time I could see it was primarily about justification, I chose to remain silent until I could find a better way to make a real contribution.
This practice is good for all of us but it seems women have some additional challenges.