Is that a real word? Whatever. We'll run with it.
     To insist on having your way, to make it a point to demonstrate to others, whether verbally or by body language that you will not budge, is a test of wills. Who will blink first? Who will give up ground? Who will stand their ground no matter the cost and further sow the seeds of discord?
     Insistent behavior can happen anywhere where two parties with strong opinions on how things should be, on what is right, meet. What usually happens is a standoff of some duration, usually not long, where the combatants stare each other down or issue statements filled with innuendo. The body language isn't inviting either. One can sense tension rising, and even danger in the air should the standoff last more than a few seconds.

     People used to getting their way usually approach others with a tried and true, greatly honed sort of steamroller action, one that is meant to bowl you over. This is so you won't steamroller THEM. It is an offensive measure, not a defensive one.
     Insisters live in environments where they test their wills on others daily, so they get very good at it. Think managers. Executives. Leaders of the pack in any field. Insisters could almost be said to be their own genre. They are easily identified because their approach is bombast all the way, no room for negotiation.
     What insisters fear the most is discussion and dialogue, for they don't want it. They don't want to hear your viewpoint or even consider it. There is no sitting down at the conference table and working things out with these people. And if there just happens to be any sitting around the table happening, the discussion will be meant only to sway you, not mediate any disputes. It's called 'winning'. At any cost.

    Counter strategy, for those affected by insisters? Yield. Give ground. Avoid the confrontation. Wait for better timing, for softening. Negotiate only with people open to it and don't waste your time on insisters for in order to reach agreements there have to be willing parties. Resistance is one thing, insistence is resistance ramped up a notch. There is something valuable and almost sacred to them that the insisters are protecting. Winning to them means keeping it. Losing to you means forfeiting it. What is that 'it'?
     Who knows? It could be more than just one thing (but you can guess).