(And why one negative voice can cost a team up to 40% of its performance — and what to do about it)
Is it just winter, the economic pressures or is something else going on with how negative things feel right now?
That was the question that Paul asked me on this week’s WellBeing Wednesday on 919FM.
And the answer is: all of it. It’s never just one thing. It’s layered — which is actually useful to know, because if it’s layered, the fix can’t be a single one either.
There’s real biology behind why our mood is heavier in Winter – for anyone experiencing reduced daylight, know that it affects the serotonin and melatonin pathways that regulate mood. When we’re used to more temperate climate, the cold weather keeps us indoors, which also means less social contact at exactly the moment we need more of it.
And then there’s the steady drip of local and global news – not because good news doesn’t happen, but because our brains are wired to pay closer attention to threat. Layer on collective stress like economic pressure, infrastructure that is lacking, the daily friction of simply getting through a week and it adds up to something significant. Not an overreaction but a cumulative load.
But here’s what I want to talk about today — not as a wellness topic, but as a leadership and business one: what does negativity actually cost a team? And what does it cost the leader carrying it?
BODY: What Negativity Does to the Nervous System
Negativity isn’t just a mood – it’s a physiological state. A team or leader operating from a negative filter is, more often than not, operating from a nervous system stuck in some version of threat response — tense, depleted, primed to detect danger rather than opportunity.
This shows up physically before it shows up in performance metrics, through shallow breathing in meetings and tension that doesn’t release at the end of the day. It’s the kind of tiredness that sleep doesn’t replenish, because it’s not a rest deficit, it’s a regulation deficit.
The cost to the business: A team running on a stress response doesn’t have access to its best thinking. The body that’s bracing for impact isn’t the body that innovates, collaborates or makes considered decisions. Before any cognitive intervention works, the physical state has to shift first.
MIND: The Filter That Builds Its Own Evidence
Our minds find what we’re looking for. Wake up tired, stressed or already feeling behind, and the day obliges — the traffic, the rushed office, the one negative comment scrolled past — all become proof for a mood that was already decided before the day began.
For some people this goes deeper than mood. Heightened rejection sensitivity — a real, well-documented pattern, though not yet a standalone clinical diagnosis — means a nervous system primed to detect rejection or criticism even where none exists – for example, receiving a flat-sounding text, a colleague who doesn’t smile or a late reply is interpreted as cold. Some people aren’t experiencing more negativity than everyone else – they’re experiencing the same neutral world through a filter that’s been taught to expect rejection.
The science: Higgins’ Self-Discrepancy Theory shows that the gap between how we expect to be treated and how we interpret being treated creates measurable psychological distress — distress that compounds the more often the gap goes unexamined.
The cost to the business: A leader or team member operating from this filter isn’t being difficult – they’re interpreting a workplace that may be entirely neutral as actively hostile, and responding accordingly. That misread compounds across every interaction, every email, every piece of feedback, until the relationship itself becomes the casualty.
BEing: How One Person Reshapes a Room
Negativity is contagious — and there’s documented research behind that, not just anecdote. A study out of the Rotterdam School of Management found that a single toxic or negative team member can cause a 30 to 40 percent drop in overall team performance -not because that person is doing less work but because so much collective energy goes into managing, avoiding or worrying about them that there’s significantly less energy left for the actual work.
It works in the other direction too. Genuinely positive, light-filled people can be unsettling to those who aren’t currently in that state. Their positivity sometimes gets read as inauthentic or out of touch, and negative people can unconsciously try to dim that brightness, simply because joy can be uncomfortable when you don’t currently have access to it yourself.
This is also where empathic team members carry an invisible cost. People who feel others’ emotions intensely don’t just witness a colleague’s difficult week — they’re in it with them, absorbing it as their own. The reframe that matters here is empathy from a distance: it’s possible to care about someone’s struggle without taking it into your own body.
The cost to the business: Identity and culture are inseparable. Who is allowed to show up as who they are — and who is quietly dimming themselves to avoid disrupting someone else’s mood — shapes the entire emotional architecture of a team. Left unaddressed, your most positive, generative people are often the ones most at risk of disengaging first.
BUSINESS: Where It All Becomes Measurable
Negativity isn’t always a fixed character trait. Sometimes it’s simply the filter someone is currently seeing through — shaped by stress, exhaustion, past experience or unprocessed emotion. The hopeful part is that filters can change.
But change requires structure, not sentiment. Positive thinking alone doesn’t shift a nervous system out of a threat state. What does is practical, repeatable, somatic tools — used before the moment of pressure, not invented in the middle of it.
A few that I share with the leaders and teams I work with:
- The physical exit — before anything cognitive, change your physical position. Stand up, leave the room for sixty seconds. A circuit breaker, not an avoidance tactic.
- Time-boxed conversation — give any difficult interaction a hard limit before it starts, even mentally. Open-ended exposure drains. Contained exposure doesn’t.
- The one-sentence redirect — a scripted line ready in advance: “I hear that’s been really tough — I don’t have the capacity to go deeper into it right now.” Said calmly, once, it ends the spiral without requiring you to fix or absorb it.
- Box breathing — four seconds in, hold four, out four, hold four, repeated four times which is a direct, trainable way to activate the parasympathetic nervous system.
None of these are mantras. They’re mechanical because negativity gets managed with structure, not with positive thinking alone.
The Shift That Actually Lasts: Possibilities Thinking
There’s a meaningful difference between forcing positivity and genuinely being able to shift perspective. Toxic positivity skips straight to “just think positive” without acknowledging what’s actually hard — and people feel the dishonesty in that immediately.
The practice that works has two steps, always in this order. First, acknowledge the reality — name what’s actually going on, with no spin. Second, ask the expansion question: what else is possible here? How does this get better than this? What’s the lesson I’m not seeing yet.
Skip step one and jump straight to positivity, and that’s denial wearing a smile. Stay in step one without ever reaching step two, and that’s where suffering lives.
Possibilities thinking isn’t ignoring the obstacle. It’s refusing to let the obstacle be the last word.
The science: Barbara Fredrickson’s Broaden and Build theory shows that positive emotional states genuinely broaden cognitive flexibility and creative problem-solving, while negative states narrow focus into pure threat response. This is also supported by James Gross’s research at Stanford on cognitive reappraisal — how we interpret a stressful event affects our wellbeing more than the event itself.
What This Means For Your Team
Acknowledging that something is hard isn’t the same as deciding it has to stay joyless. You don’t need to pretend things are fine. You simply need to ask one more question after naming what’s real.
Negativity in a leader or a team isn’t always a character issue. Often it’s a filter — shaped by pressure, exhaustion or unprocessed experience. And filters, unlike personalities, can shift. But only with the right structure, practised before it’s needed, not invented in the moment it is.
One last distinction worth sitting with: venting and negativity are not the same thing.
Venting has an endpoint. You say it, you feel it, you move through it — and it often builds connection with whoever’s listening. Negativity doesn’t go anywhere. It’s the same complaint on a loop, and instead of bringing people closer, it slowly drains them. The test is simple: after venting, do you feel lighter? If yes, that’s healthy release. If you feel exactly the same, every time, about the same thing — that’s no longer venting.
JustOneThing
- Pick one tool from this piece — box breathing, the physical exit, or the one-sentence redirect — and practise it once today, in a calm moment, even when you don’t need it. That’s how it becomes available to you when you do.
- Check in on the person in your life or team who feels things most deeply.
- We’re also collecting 919 blankets for pets in need this winter through JustOneThing365 and 919FM. One blanket. One life. For more info
With love,
Petra
Alignment Architect for Intentional Performance
