Someone mentioned practice, and yes that is key. When I decided I was going to learn how to sell, I quit my job and went work in new car dealerships; it took me

Someone mentioned practice, and yes that is key. When I decided I was going to learn how to sell, I quit my job and went work in new car dealerships; it took me a couple of years and hundreds of negotiations before I became a force to be reckoned with. Read sales books like those written by Zig Ziglar and Jay Abraham. Voss is awesome (though the title is a misnomer as he does advocate for splitting the difference in a part of that book). Some of his best advice is that of mirroring--it works like magic. Never forget that if you are not prepared to walk away, you are not negotiating you are capitulating. Love or hate Trump he understands this fact about negotiating and he owns it.