01/09/2025

The Dark Side of Personality series: introducing the Diligent derailer

There’s something reassuring about a colleague who takes pride in getting things right. The one who checks every detail, upholds standards, and never misses a deadline. But when high standards become perfectionism, and conscientiousness becomes control, the strength of diligence can quietly turn into a liability.

According to the Hogan Development Survey (HDS), the Diligent derailer reflects individuals who are hardworking, organised, and precise—but who can also be overly critical, micromanaging, and inflexible under pressure.

What is the Diligent Derailer?

Those high on the Diligent scale are often described as:

  • Detail-focused and reliable

  • Committed to high performance

  • Responsible and dependable

  • Strong upholders of rules and structure

In the right role, these qualities are assets—particularly in environments where precision and accountability are critical. But when overplayed, the Diligent derailer can lead to:

  • Reluctance to delegate

  • Excessive checking or rework

  • Frustration with others’ perceived lack of rigour

  • Paralysis in the face of ambiguity or shifting priorities

What begins as high standards can quickly become over-control, undermining collaboration and slowing progress.

Diligent in Leadership

Diligent leaders are often seen as the ones who “get things done.” They bring structure, rigour, and quality assurance. But in leadership roles—especially those requiring vision, delegation, or innovation—the risks begin to show.

Leaders with a strong Diligent profile may:

  • Struggle to trust others to deliver

  • Get bogged down in detail and lose sight of the bigger picture

  • Micromanage teams and resist shared ownership

  • Find it hard to adapt quickly when plans change

This can lead to frustration on both sides: teams feel stifled, while the leader feels let down or unsupported.

When Rigour Becomes Rigidity

Left unchecked, the Diligent derailer can cause:

  • Bottlenecks due to over-involvement

  • Team demotivation due to perceived lack of trust

  • Slower decision-making and missed opportunities

  • Leadership fatigue or burnout from trying to do too much alone

This is particularly problematic in fast-paced or ambiguous environments, where adaptability matters as much as accuracy.

How to Manage the Diligent Derailer

The development journey for Diligent leaders isn’t about lowering standards—it’s about expanding their definition of effectiveness. Leadership is as much about enabling others as it is about executing well.

1. Reframe Delegation as Development

Many Diligent leaders fear that others won’t do the job “properly.”

Coach them to see delegation not as a risk to quality—but as a chance to:

  • Develop team capability

  • Focus on higher-impact strategic work

  • Build resilience into the system

2. Shift From Perfect to Good Enough

In leadership, timeliness and momentum often trump perfection.

Encourage Diligent leaders to ask:

  • What’s the impact of holding this back?

  • What would 80% done look like?

  • Where am I overengineering or overpolicing?

3. Build Tolerance for Ambiguity

Precision doesn’t always work in messy, fast-moving contexts.

Support Diligent leaders in:

  • Practising scenario thinking

  • Using assumptions and guardrails, not fixed plans

  • Getting comfortable with “test and learn” approaches

4. Gather Feedback from Direct Reports

Diligent leaders may not realise their behaviour feels controlling.

Use 360° feedback to explore:

  • How their team experiences their involvement

  • Whether they create space for others’ ideas

  • Where their attention to detail is helping vs. hindering

5. Create New Metrics for Success

Many Diligent leaders are driven by task completion and flawless output.

Challenge them to redefine success around:

  • Team autonomy

  • Psychological safety

  • Strategic influence

From Control to Confidence

At its core, the Diligent derailer is about a deep sense of responsibility. These leaders care. A lot. But when that care becomes controlling, they risk creating friction, slowing progress, and burning out in the process.

The journey is about shifting from personal accountability to collective achievement—from doing it all to enabling all. When Diligent leaders learn to trust, delegate, and prioritise progress over perfection, they become more effective, sustainable, and empowering to those around them.