Before you consider turning up the volume to make yourself heard, try to remember that anyone capable of speaking or conveying themselves loudly or aggressively can only gain admiration if they have something worth saying. Where you might feel your voice isn't heard or opinion regarding something counts for zilch, don't be concerned. It might take one or two people a bit longer to listen to and understand the point you're making. The calmer you remain, the quicker that'll happen.