This is likely more than you want to know ;-)
An important component of selling an idea, airing a grievance, etc. is understanding the preferred communication style of the party to whom you’re selling or airing. Often, but not always, you’re going to have a sense of the “personality” of the other party. I’m painting some broad strokes here, and the finer details are important; but let’s say that the person you’re wanting to convince is highly analytical. You’ll want to effectively match that style in your communication: provide details, provide analysis of the impact of your recommendation, respect procedure and protocol, etc.If you want to reveal any observations about the personality types you’re dealing with, I can provide some generic communication recommendations.
I’m often approached with recommendations for change; and I always appreciate someone who is articulate (without being overbearing), passionate (without being overly emotional) and well-informed (without being a know-it-all). And that takes practice.
I’ve observed your postings on Fluther across a few years, and you strike me as one who possesses the positive attributes I listed.
Another general recommendation is to get as much information as you can about why you’re getting pushback. Are you unwittingly crossing some cultural boundaries; are you stepping on some toes; are you providing input at a time when it’s difficult for the other party(ies) to accept it????? You get the drift.