" Negative relationships are unpleasant, but they’re predictable: if a colleague consistently undermines you, you can keep your distance and expect the worst. But when you’re dealing with an ambivalent relationship, you’re constantly on guard, grappling with questions about when that person can actually be trusted. As Duffy’s team explains, “It takes more emotional energy and coping resources to deal with individuals who are inconsistent. "

― Adam M. Grant , Originals: How Non-Conformists Move the World