Toxic people don’t clock off at 5pm. The colleague who steals credit has a cousin who steals attention at every family dinner. The friend who only calls when they need something has a sibling who does the same at Christmas. The manager who gaslights you in meetings has a romantic equivalent who gaslights you in relationships. Different costume, same script.
This article covers all four arenas, because your emotional wiring doesn’t have a separate setting for “coworker” versus “mother” versus “partner.” The research on emotional intelligence and difficult behaviour applies across every relationship in your life, and honestly, it’s often more useful at home than at work, since you can’t put in your notice on a sibling.
Let’s get into what the evidence says, with a practical tip for each example.
Emotional intelligence is protective everywhere, not just in the office.
A study in Asian Business & Management followed doctors under bullying supervisors and found that those with higher emotional intelligence took a noticeably smaller hit to performance and wellbeing than those with lower EI, even while experiencing the same bullying. Read it here: https://link.springer.com/article/10.1057/abm.2013.5
The mechanism doesn’t care whether the source of stress is a boss, a parent, or a partner. Your own capacity to recognise, name, and regulate what you’re feeling determines how much damage someone else’s behaviour actually does to you. This is why two people can experience the exact same difficult mother-in-law and walk away with wildly different levels of distress.
Practical tip: Before any interaction you’re dreading, whether it’s a work meeting or a family lunch, spend thirty seconds naming what you expect to feel. “I expect to feel dismissed.” “I expect to feel judged.” Labelling the anticipated emotion in advance reduces its intensity when it shows up, which means you walk in less reactive and think more clearly.
Charm is not the same thing as good character, in relationships or otherwise.
A 2024 Frontiers in Psychology study of 231 managers found that people with genuinely strong, tested emotional intelligence scored lower on manipulative traits than those who simply seemed emotionally skilled. Summary here: https://www.aacsb.edu/insights/articles/2025/04/research-roundup-april-2025
A related 2025 European Psychiatry paper examined the link between emotional intelligence and dark triad traits, including narcissism and psychopathy, and reinforced that these are separate constructs worth assessing independently rather than assuming one implies the other. Read it here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12437454/
This matters enormously outside the office. The most charismatic person at the party, the most magnetic first date, the golden-child sibling who can talk their way out of anything, all of these people can be genuinely persuasive while still being fundamentally self-serving. Charm is a delivery mechanism, not a character reference.
Practical tip: Stop assessing new partners, friends, or in-laws by how good the conversation feels. Track whether their actions match their words across a month, not a first impression. Toxic people are frequently excellent talkers. They are far less reliably excellent at doing what they said they’d do.
Toxic family environments are now something researchers can actually measure.
A 2025 study published in the Journal of Family Trauma, Child Custody & Child Development introduced the Family Toxicity Scale, a validated tool distinct from the standard childhood adversity measures, built specifically to capture things like emotionally immature caregivers, parentification, and chronic household dysfunction. It found meaningful links to depressive symptoms and mental health outcomes in adulthood. Read the study here: https://www.tandfonline.com/doi/full/10.1080/26904586.2025.2511026
This is a useful validation if you’ve ever been told you’re “too sensitive” for noticing that your family environment growing up was, in fact, a lot. Family toxicity doesn’t need to involve dramatic abuse to leave a mark. Chronic dysfunction, unpredictable moods, and emotionally immature caregiving do measurable damage on their own.
Practical tip: If a family relationship leaves you anxious, small, or endlessly explaining yourself after every interaction, that’s data, not disloyalty. Write down the pattern rather than just the incidents. One bad dinner is an event. A decade of the same dynamic at every dinner is a pattern worth naming to yourself, even if you never say a word to them about it.
Put mental distance between yourself and the drama, and do it on purpose.
University of Michigan psychologist Ethan Kross has spent years studying self-distancing, where you reflect on a difficult interaction as a third-person observer rather than reliving it from inside your own head. Participants who used this technique showed lower blood pressure reactivity and fewer aggressive thoughts than those who replayed events in the first person. Full research here: https://sites.lsa.umich.edu/emotion-selfcontrol-psych/wp-content/uploads/sites/1322/2017/09/Self-distancing-theory-research-future.pdf
This works identically whether you’re stewing over a passive-aggressive email or a passive-aggressive comment from your mother-in-law about your parenting. Replaying the moment starring yourself as the wronged party keeps your nervous system activated. Observing it from a small distance actually helps you process it and let it go.
Practical tip: After a bad interaction with anyone, narrate it internally using your own name instead of “I.” As in, “Jess felt her jaw tighten when he made that comment about her cooking again.” It sounds strange the first few times. It also reliably lowers emotional reactivity, which beats stewing for three days.
Grey rocking works, has real limits, and definitely isn’t just a work strategy.
The grey rock method, becoming deliberately unresponsive and uninteresting to someone who feeds on drama or reaction, has been widely covered by outlets including the New York Times and Washington Post as a strategy for managing manipulative or narcissistic individuals. It’s most commonly discussed in the context of family members, romantic partners, and coworkers who cannot simply be cut out of your life. Overview here: https://www.ebsco.com/research-starters/health-and-medicine/grey-rock-method-grey-rocking
The honest caveat, which most listicles skip: research on grey rocking’s actual effectiveness is thin, and experts note that when it does work, the toxic behaviour often escalates before it stops, since you’re removing the attention the person relies on. It’s a short-term containment tool, not a long-term relationship strategy.
Practical tip: Reserve grey rocking for genuinely unavoidable contact, a shared custody handover, an obligatory family event, a work handoff, not as your everyday relationship style. Keep responses short, factual, and emotionally flat: “Noted.” “I’ll think about it.” “We’ll see.” If the behaviour escalates in response, that’s expected, not a sign you’re doing it wrong.
Everyone’s collective emotional intelligence has dropped, and it’s making every relationship harder.
A 2025 Frontiers in Psychology study using global Six Seconds data documented a genuine decline in emotional intelligence scores from 2019 to 2024, labelling it an “Emotional Recession,” with the steepest drops in wellbeing and drive-related competencies. Full study here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12646932/
Burnout doesn’t stay neatly inside office walls. A depleted, under-slept, overstretched population is shorter-tempered with partners, less patient with kids, and quicker to snap at friends, not because everyone suddenly became worse people, but because collective capacity for emotional regulation has genuinely dropped.
Practical tip: Before deciding someone in your life has become “more difficult,” check whether you’ve become more depleted. Ask yourself if you’re sleeping enough, naming your emotions instead of just reacting to them, and actually recovering from stress rather than stacking it. Fix your own depletion first. It changes how much of other people’s behaviour you can absorb without it flattening you.
When it stops being “difficult” and becomes genuinely harmful.
An Australian National University longitudinal study of mid-aged workers found workplace bullying was associated with meaningfully increased risk of suicidal ideation, an association that held up even after adjusting for other stressors. Read it here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7068571/
The same principle holds well beyond the workplace. If a family relationship, friendship, or intimate partnership consistently leaves you anxious, isolated from other support, or afraid, this has moved past “personality clash” territory into something requiring outside help, whether that’s a therapist, a domestic violence support service, or simply a trusted person who isn’t inside the dynamic with you.
Practical tip: Keep a private, dated record of specific incidents in any relationship that concerns you, work, family, or romantic. Not to build a case against someone, but because clarity fades under stress, and an accurate record helps you and any professional you eventually talk to see the actual pattern rather than the fog of the latest bad day.
The bottom line
Toxic people rarely self-correct because you found the perfect sentence to say to them. What changes outcomes is your own emotional regulation, your ability to spot patterns rather than isolated bad days, and your willingness to protect your energy the same way at your parents’ house as you do in a Monday meeting.
Build that skill once, and it works everywhere, on the boss, the mother-in-law, the friend who only surfaces during a crisis, and the partner who somehow makes every disagreement your fault. You don’t get to control what toxic people do. You get to control how much of your Sunday they’re allowed to ruin, and that turns out to be worth quite a lot.
