What this article doesn't talk about is personality traits or orientations; it's focused on the biases which affect how human beings process thoughts. And it does so in very broad strokes so as to show that the cultural tropes about making lemonade when life hands you lemons might not be the way to go. That said, there are large differences in personality. among and between individuals who are motivated by approach and avoidance. That's a different subject entirely. It's not a "bias" in the same way.