Personal story, I sold my home in Austin in July of this year. I was going to sell it myself but instead found a 1% broker. It was listed at $525k and I would have taken $495k. Because I don't negotiate for a living and because $495k is a lot in comparison to what I paid, _anyone_ could have easily talked me down from $525k. But because they called the broker instead of me the property sold for $547k. The broker also encouraged me to offer only 2.5% to the buyer agent instead of the 3% that is typical.

So yes, if you can keep your cool, keep your mouth shut, forget how much you already profited, and have a bit of greed in you, then sell it yourself. Otherwise outsource this job and pay as little as you can for it.