The Hidden Cost of Staying Quiet: Why Lack of Assertiveness Undermines Leadership, Teams and Business Performance
In leadership coaching and team coaching, one issue consistently emerges across sectors and seniority levels: a struggle with assertiveness. It’s a topic that hides in plain sight. Many leaders mistake assertiveness for aggression, worry about upsetting others, or fear being labelled “difficult” – especially women and underrepresented professionals. But the cost of avoiding assertiveness is much greater than most realise. In this blog, we’ll explore how a lack of assertiveness affects not just your self-confidence, but also your career trajectory, your team’s performance, and your organisation’s results. We’ll also look at why so many capable leaders shy away from assertiveness and what shifts when they stop. What is Assertiveness, Really? Let’s start by clearing something up: assertiveness is not about being the loudest voice in the room, nor is it about being controlling or demanding. Assertiveness is the ability to express your needs, opinions and boundaries clearly and respectfully, without guilt or apology. When leaders operate with assertiveness, they build trust, set direction, and create psychological safety. When they don’t, the hidden costs of avoiding assertiveness can be far greater than most realise, with fallout felt at every level — from fractured teams to missed opportunities and poor strategic visibility. Why Do Leaders Avoid Being Assertive? Avoiding assertiveness is rarely about incompetence or weakness. It’s often about conditioning. You were rewarded for being helpful and agreeable, not disruptive. You fear being misunderstood or causing conflict. You’ve internalised the belief that speaking up puts relationships or credibility at risk. In male-dominated or hierarchical environments, you’ve been told—directly or indirectly—that you should be grateful to be in the room at all. This avoidance is especially common in high-performing individuals with a people-pleasing edge. They hold back, smooth over tension, or tolerate unclear expectations—hoping to be seen as a team player. But in doing so, they lose visibility, clarity, and influence. The Career Cost of Under-Assertiveness In executive and leadership coaching, I’ve seen countless smart, capable leaders overlooked not because of lack of talent but because their assertiveness isn’t where it needs to be. Here’s what under-assertiveness actually looks like in a career: You get excellent feedback but aren’t seen as “strategic material.” You’re passed over for opportunities because others make their ambitions clear. You constantly adapt to others’ needs but never get yours met. You feel frustrated, under-valued, and exhausted from working twice as hard to be heard. Assertiveness creates visibility. And visibility is the currency of career progression. If people don’t know what you stand for, what you’ve delivered, and what you want, they cannot support you. The Impact on Your Team Leaders who avoid assertiveness can unintentionally disempower their teams. They may avoid difficult conversations, delay decisions, or fail to set clear expectations, all of which leads to confusion, resentment, and underperformance. Teams crave clarity. They want to know where they stand, what success looks like, and how to grow. When leaders are assertive, they communicate this directly, leading to stronger engagement and higher trust. When they’re not, team culture suffers. Common ripple effects include: Staff attrition due to unclear boundaries or inconsistent feedback. Conflict avoidance leading to passive-aggressive behaviours. A sense that “nothing changes” even when issues are raised. In short, when a leader holds back, the whole team pays for it. The Organisational Impact From a business performance perspective, the costs compound further. A culture that avoids assertiveness becomes: Politically charged and slow to act. Overly cautious or dependent on hierarchy. Lacking innovation due to fear of challenging the status quo. Assertiveness fuels effective leadership conversations. It enables alignment, clarity, and pace. In team coaching, one of the first shifts I facilitate is helping leaders build the confidence and skill to communicate assertively, especially during tension or ambiguity. The result? Faster decisions, clearer priorities, and stronger cross-functional collaboration. The Power of Assertive Leadership When leaders embrace assertiveness, here’s what shifts: ✅ They ask for what they need without over-explaining. ✅ They give and receive feedback in a way that builds trust. ✅ They challenge constructively and lead courageous conversations. ✅ They model psychological safety by speaking up and listening well. ✅ They create teams that feel safe, seen, and supported—but also stretched. Assertiveness is not about changing your personality. It’s about changing your approach. And that’s something that can absolutely be learned and strengthened over time. How Leadership Coaching Helps Leadership coaching creates a safe, structured space to: Understand what’s really stopping you from being assertive. Reframe limiting beliefs about being seen or speaking up. Practise difficult conversations before you take them into the real world. Build strategies that align with your natural leadership style. Get feedback and support as you test new behaviours. If you’re leading a team—or aspiring to—assertiveness is not optional. It’s a core leadership skill. The good news? With coaching that builds self-awareness, you can uncover what’s holding you back from assertiveness and change it for good. With the right support and repetition, it becomes natural. Final Thought If you’ve been praised for being “nice,” “collaborative,” or “easy to work with” but you still feel invisible, unheard or stuck, it may be time to ask yourself: Am I being assertive enough? Assertiveness isn’t about being someone else. It’s about being more you – clearer, bolder, more impactful. Your career, your team, and your organisation will thank you for it. Lead with Trust, Lead with Influence At Sarah Jones Coaching, we partner with brands and leaders who want to be heard — and believed — in a noisy, AI-driven world. In the age of misinformation, trust isn’t a bonus; it’s your most valuable asset. If you’re ready to cut through the clutter, protect your reputation, and connect with your audience on a deeper level, let’s talk. Book your confidential consultation today and start building the kind of brand trust that lasts. Book A Call











