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The Power of Confidence
Rewrite Your Story. Overcome Self-Doubt. Step into Your Power.

Colleen Callander (Author)

9781394374601, Wiley

Paperback / softback, published 23 February 2026

240 pages
21.8 x 14.7 x 2 cm, 0.272 kg

The Power of Confidence is more than a book — it’s a reminder that believing in yourself is a practice, built over time. Colleen’s words inspire you to live with purpose, stay true to your values, and build the kind of confidence that shines from within.
—Lorna Jane Clarkson, Founder and Chief Creative Officer of Lorna Jane Activewear

This book is powerful because it’s written with authenticity and lived experience. Colleen shows us that confidence isn’t about perfection, it’s about being real, making brave choices, and backing yourself every day. A must-read for women of all ages.
—Lisa Davenport, Hampton Housewives

Confidence doesn’t have a size tag, and The Power of Confidence proves it. Colleen inspires us to embrace our bodies, our voices, and our power. This is the book women everywhere have been waiting for.
—Tara McKeon, Founder & CEO, Proud Poppy Clothing

The Power of Confidence is a must-read for every woman who has ever doubted herself. Colleen reminds us that true strength comes from within and shows us how to step boldly into our power.
—Alex Fevola, CEO & Founder, Runway Room Enterprises

Colleen has captured the true essence of confidence. It’s not about fitting in, it’s about standing out as yourself. The Power of Confidence reminds women that their individuality is their strength, and that self-belief is the most powerful outfit they’ll ever wear.
—Maku Fenaroli, Founder, Maku The Label

Colleen’s message is clear: confidence is the foundation of great leadership. This book shows you how to build it, live it, and lead with it.
—Chris Dutton, Founder, The CEO Magazine

Unlock your confidence and transform your life in just 30 days

It’s time to break free from self-doubt and step into your full potential. The Power of Confidence is a practical handbook for taking action and achieving your goals. In this motivational, unmissable guide, award-winning CEO and bestselling author Colleen Callander shares a step-by-step approach to leading with confidence in every area of your life.

Develop the tools you need to overcome limiting beliefs, take action and face your challenges with courage and resilience. With The Power of Confidence, you’ll find honest, real-world stories and practical strategies, culminating in a transformative 30-day plan for unlocking confidence that will last a lifetime.

  • Shatter the myths and discover why true confidence starts within
  • Overcome imposter syndrome and build lasting self-belief
  • Master your mindset for self-awareness and courage
  • Apply proven tools for building confidence one habit at a time  
  • Turn setbacks into opportunities for growth and success.


If you’re ready to advance your career, start a business or build a new life for yourself, The Power of Confidence will empower you to break free from your inner critic and create the life you’ve always imagined.

About the Author xi

Acknowledgements xiii

Introduction: Behind the curtain — my real confidence story xv

Part I The confidence reset 1

1 The truth about confidence and why it matters 3

2 The confidence reset — shattering the eight biggest confidence myths 11

3 Power from the inside out 27

4 Reclaiming your confidence — overcoming the barriers within 41

5 The confidence shift — two power moves that change everything 49

6 Unlock your superpower — when confidence gives you wings 59

7 Your inner circle — how people influence your confidence 65

8 The power of habits — building confidence one habit at a time 77

9 The power of boundaries — make space for the confident you 89

10 When failure fuels confidence — turning setbacks into strengths 97

11 The confident leader — in business and in life 107

12 Confidence and vulnerability — the strength in showing up 115

Part II The power of confidence — 30-day confidence transformation 125

Day 1 Confidence your way 129

Day 2 The lie stops here 131

Day 3 Stop the comparison game 133

Day 4 Bust the myths 135

Day 5 Start with love 137

Day 6 Own your superpower 139

Day 7 Embody your power 141

Seven days in … a lifetime of confidence to come 143

Day 8 Gratitude sparks confidence 145

Day 9 The power was always yours 147

Day 10 One habit at a time 149

Day 11 Lead like you mean it 151

Day 12 No more hiding 153

Day 13 Goals are confidence in motion 155

Day 14 Fill your cup; fuel your power 157

Day 15 Let kindness in 159

Halfway there: Building confidence that lasts 161

Day 16 Beyond your comfort zone 163

Day 17 The only approval you need 165

Day 18 Values lead the way 167

Day 19 The power of ‘I am’ 169

Day 20 Joy fuels your fire 171

Day 21 Your vision fuels your power 173

Day 22 Own it. Amplify it. Be it. 175

Day 23 Doubt off; Power on 177

Day 24 The confidence you keep 179

The finish line is in sight 181

Day 25 Rituals are confidence on repeat 183

Day 26 Mind, body, soul — fully charged 185

Day 27 Approval not required 187

Day 28 Life in balance 189

Day 29 Flip the script on failure 191

Day 30 Stand in your success 193

You did it! 195

Conclusion: Confidence beyond the 30-day Confidence Transformation 197

Beyond the book 203

Notes 205

Subject Areas: Business & management [KJ]

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