Speech is like a bell, once it is rung, it cannot be unrung. Once we say something, we cannot take it back. Equally important as what we say is the motivation behind our words.
All projects will have meetings. This is a great opportunity to practice Right Speech. We need to consider how we contribute to the meeting and why. Do we shoot down someone else's suggestion because we don't like them (even if the suggestion was good)? Do we speak our mind just to stroke our own ego? Next time you're in a meeting, think about what you say and why.