Organisational culture is often described as “the way we do things around here” but that undersells its power. Culture is the invisible operating system that determines how people think, behave and collaborate when no one is watching. It matters more than strategy, structure or systems because it shapes the everyday choices that determine performance. Cultural norms are determined by the everyday behaviours and choices leaders make, how they show up, listen, communicate and respond. Leader’s behaviour spreads quickly like a contagion, everyone watches and learns from what they see, and model what they believe is expected, good or bad. This makes leadership the fastest, most direct lever for shaping culture and the window to act is open now.
Why the urgency matters
Employee disengagement, stress and burnout are rising across sectors. Talent now expects agency, autonomy and meaningful development; patience for poor leadership is short. When culture fails to deliver these things, organisations lose people, momentum and credibility. Changing strategy or reorganising teams is slow; changing leader behaviour can change the lived experience of work immediately. If organisations want different results this year, leaders must change what they do this week.
What high‑performing culture looks like
High‑performing cultures are intentionally created and reinforced. The following framework acts as a proxy method to assess culture. How does your team measure up?
Purpose: Teams understand why their work matters and how through shared vision, mission and values they contribute to something bigger than themselves.
Direction: Plans are co‑created with transparent responsibilities and decision making that favour collaboration and coaching over command and control.
Mindset: Teams value diversity of thinking and approach, and use imagination and creativity with a learning, solution‑focused approach that treats setbacks as data, not failure.
Environment: Decentralised decision making, lean systems of controls and strong relationships let teams act quickly and responsibly.
Across this framework, 4 behaviours ‘TEAM’ become cultural DNA when adopted by leaders:
1. Trust: Permission to act and experiment without micromanagement.
2. Equality: Coaching‑style communication, not hierarchy driven deference.
3. Accountability: Ownership to self, others and the mission, with a drive for continuous improvement.
4. Modelling: Leaders consistently embody the virtuous behaviours they want to see, especially when under pressure.
How leaders get stuck
Many leaders believe they are operating at an advanced level while their teams experience something different. This gap between self‑perception and lived reality is where trust erodes.
Some leaders rely on formal authority and compliance; others focus on building deeper relationships and earning trust through credibility. Leaders who drive results with accountability on a foundation of caring relationships operate at an advanced skill level, and leaders who pair this advanced skill with time spent developing people, balancing support and challenge, have the greatest impact and legacy by creating a team that consistently performs at a level greater than the sum of its parts.
A practical plan to start this week
Regularly ask for feedback: Create safe moments for honest feedback and reward candour, no matter how challenging it feels.
Choose one behaviour to change: replace a controlling habit (for example, telling) with a coaching habit (for example, active listening and curious questioning).
Reinforce purpose daily: Share one short story each week that links work to vision and mission in a meaningful and memorable way.
Delegate with empowerment: Give ownership with clear boundaries and let the team own the outcome.
Track your emotions: Record how you felt during uncomfortable moments, where your attention went and how you reacted; then identify one specific change to try.
These steps are deliberately simple because complexity stalls action, and small steps eventually compound into default behaviours. Work on one or more and share with others; culture follows behaviour that is repeated and reinforced.
Embedding change so it lasts
Behavioural change becomes cultural only when it is visible, rewarded and copied. Leaders should make their own development public: acknowledge blind spots, share learning, and invite others to hold them accountable. Build rituals that reinforce the new norms, short debriefs after decisions, peer coaching sessions, or weekly recognition for experiments that taught something. Over time, these practices shift expectations and make the new behaviours the default.
Final takeaway
Culture is not fixed by strategy documents or values posters; it is shaped by everyday leadership choices. The time to act is now: talent expectations have shifted and patience is limited. Change one leadership behaviour this week and you will see the culture begin to move with you.
About Mark
Mark Tweedie is a leadership and organisational development consultant and founder of The Performance Blueprint, where he works with leaders and organisations to build high-performing teams and cultures. Over a 30-year career spanning education, local government and the leisure sector, he has held several senior leadership roles, and lead organisational transformation and service innovation.
Mastering Leadership Podcast: The Psychology Behind Business Performance Podcast
I recently joined Mark Tweedie and his co-host Stuart Munro – CPsychol – HCPC Registered Sport Psychologist on their Mastering Leadership Podcast for a fascinating conversation on psychosocial risk, human sustainability and the limits of traditional leadership.
We explored why many workplace wellbeing initiatives fail, the importance of data-driven diagnostics, and how leaders can move beyond surface solutions to create genuine cultural change. The discussion also touches on generational shifts, AI’s impact on work, and the future of leadership.
If you’re interested in business psychology, leadership strategies or organisational culture, this episode is well worth a listen.
Listen on Spotify or Apple Podcast.