“In a fixed mindset, problems are grounds for emergency alerts and divorce lawyers. In a growth mindset, they’re inevitable challenges to be worked through.” — Carol S. Dweck
We might expect that mindsets are most important in domains of performance—education, sports, business. But Dweck argues that mindsets are equally powerful in the domain of relationships, including romantic partnerships and friendships. The beliefs we hold about whether people can change, whether compatibility is fixed or grown, and what problems in relationships mean fundamentally shape the quality of our closest bonds.
The fixed mindset, when applied to relationships, creates what Dweck calls the “soulmate myth”—the belief that there is a perfect person out there for you, and that a good relationship means you and your partner are perfectly compatible from the start. In this view, relationships are either meant to be or not, and problems or conflicts are evidence that this is the wrong relationship.
This belief sounds romantic, but Dweck’s research shows it is deeply corrosive. People who hold this belief:
The soulmate myth is the relationship version of the fixed mindset belief about talent: either you have it (perfect compatibility) or you don’t.
Fixed Mindset in Relationships: A relationship reveals whether two people are compatible. Problems prove incompatibility. The goal is to find the right person—who will be naturally perfect for you.
Growth Mindset in Relationships: A relationship is built over time through communication, effort, and willingness to grow together. Problems are opportunities to understand each other better and develop the relationship.
Research on lasting relationships consistently supports the growth mindset view: the happiest long-term couples are not those who report effortless compatibility from the start, but those who have developed their relationship through sustained effort, honest communication, and willingness to change and grow.
Dweck’s research found that couples who held growth mindset beliefs about their relationship—who believed that compatibility could be developed—showed greater relationship satisfaction over time. They were more likely to discuss problems openly, to try new approaches when something wasn’t working, and to view difficulties as temporary challenges rather than signs of fundamental incompatibility.
The practical implication is profound: choosing a life partner is not primarily about finding someone who is “naturally” compatible with you. It’s about finding someone who is willing to do the work of building compatibility—and doing that work together.
When a fixed mindset person encounters conflict in a relationship, they tend to interpret it through the lens of fixed traits: “He’s selfish,” “She’s controlling,” “He’s inconsiderate.” These trait attributions feel like explanations, but they actually shut down problem-solving. If the problem is caused by a fixed character flaw, there’s nothing to be done—the person either is that way or isn’t.
Fixed mindset people often:
Growth mindset people approach conflict as something to be worked through rather than evidence of incompatibility. When problems arise, they tend to:
One of the most damaging patterns in fixed mindset relationships is the assignment of blame for problems. When something goes wrong, the fixed mindset impulse is to determine who is at fault—and that determination then becomes about character: the person at fault is flawed, inadequate, bad.
This blame-based approach is destructive for several reasons. First, most relationship problems don’t have a single person “at fault”—they’re created by the interaction between two people. Second, even when one person did something problematic, labeling them as fundamentally flawed doesn’t produce change—it produces defensiveness. Third, the energy spent assigning blame is energy not spent solving the problem.
Growth mindset couples are more likely to ask “what can we do about this?” than “whose fault is it?” This shift from blame to solution is one of the most practically powerful changes a couple can make.
Dweck raises a troubling dimension of fixed mindset in relationships: it can be used to justify harmful behavior. A partner who treats their significant other badly—with criticism, contempt, or aggression—may justify it with fixed mindset logic: “That’s just who I am,” or “I can’t help it—it’s just how I respond when I’m stressed.”
This use of fixed mindset thinking to excuse behavior is particularly damaging because it removes responsibility. If your behavior flows from who you inherently are, you are absolved of the obligation to change it. But people can and do change how they behave in relationships—and holding them accountable for change is both appropriate and possible.
The growth mindset view is that people are responsible for their behavior, that behavior patterns can be changed with effort and awareness, and that accepting harmful behavior as unchangeable does a disservice to both partners.
The mindset principles that apply to romantic relationships apply to friendships too. Fixed mindset friendships can stagnate because both people become entrenched in fixed roles and perceptions—“she’s the funny one,” “he’s the serious one”—that don’t leave room for growth and change.
Growth mindset friendships allow both people to evolve. They’re characterized by genuine curiosity about who your friend is becoming, not just who they were. They can weather periods of distance and reconnection because the relationship isn’t dependent on consistent current compatibility but on genuine mutual investment in each other.
Dweck notes that some people avoid deep friendship because they fear that intimacy will lead to judgment and rejection—a fixed mindset concern. Believing that friendship requires perfect compatibility from the start makes it impossible to develop the deep bonds that only come from navigating difficult moments together.
Reflect on your most important relationship. Do you approach problems as evidence that something is fundamentally wrong, or as challenges to work through together? When conflicts arise, do you tend toward trait-based judgments (“he’s inconsiderate”) or behavioral observations that invite change? What would it mean to take a more growth-oriented approach to building this relationship?