Self-belief School

Heal the root causes of your self-doubt

heal the root causes


If you are fed up with holding yourself back personally, creatively, professionally, relationally, but you don’t know how to change things, you're in the right place.

Self-belief is at the heart of everything you do (or don’t) create in your life. Developing self-belief isn't about luck or information or finding a 'hack' for procrastination. It's about untangling from all the ways you have been told that you are not enough, or too much.

THIS IS healing, LIBERATING, brave WORK.

Self-belief School is where you learn how.

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Self-doubt is a tragic waste of our time, energy and potential.

Millions of us are spending our days second-guessing our abilities, worrying about how we look, and not quite trusting our own judgement.

  • 75% of women regularly experience self-doubt in the workplace.
  • Nine in 10 women opt out of important life activities because they don’t like the way they look.
  • 60% of women have put off starting their own businesses due to self-doubt.   
  • British women have the second lowest self-esteem in the world.

Outdated research that reduces self-doubt to a sabotaging inner-critic, the oversimplification of confidence, and the rise of positive thinking as a cure for all of life's uncertainty, has left intelligent women attempting to use magical thinking to solve a very human challenge.

When it comes to healing the roots of self-doubt, we have too many systemic causes and not enough evidence-based solutions.

I am devoted to changing this.

Because we deserve better.

Let's do this!

there are three ways to work with me:

Self-belief School is a lighthouse in your everyday life where you learn how to heal the root causes of self-doubt, untangle from protective patterns, and create robust and resilient self-belief, self-acceptance, self-worth and self-trust (the best kind of selfies!).

Create a life that you actually like.

If you are an experienced practitioner and self-doubt is impacting your clients, Self-belief Coaching Academy is an evidence-based, trauma-informed, ICF-accredited programme using proven concepts, tools and approaches.

This is a direct path to your coaching mastery.

While coach training provides incredibly helpful approaches, and client work gives us the experience of supporting actual humans, coaches need a space to make sense of everything.

Coaching Supervision is recognised as the standard for coaching excellence. Get some!


What people
are saying

Working with Sas is like a having a wise sage, a best friend and a skilled therapist on speed dial.

- Sara Tasker, @meandorla

After Sas supported us to implement a stronger coaching culture, we are individually and collectively, better able to function as coaches within our organisation.

- Jamie Ward, Global Head of Organisational Development, BBC Worldwide

SBCA is the best investment you can make for your coaching mastery and practice.

- Marie Kenny

Meet Sas

Master Coach + Supervisor

My approach is evidence-based, deeply compassionate and (importantly) - it works!

I've spent the last decade researching and coaching with hundreds of humans to overcome self-doubt and connect to their self-belief. I have an MA in Coaching and I'm completing a Diploma in Coaching Supervision.


Courage & Spice


Hey guys and gals and non-binary pals! Courage + Spice is the podcast for humans with self-doubt, hosted by me, Sas Petherick. You can expect interviews with delightful humans, evidence-based resources and original proven coaching tools. If Self-doubt is holding you back in your life, relationships, career, creativity or business, Courage + Spice is especially for you.

Take the quiz!

Self-doubt Archetypes

'The Self-doubt Archetypes Quiz was a real 'OH SHIT' moment. I found it so insightful, I’ve been telling my friends and whoever will listen to do this!' – Carly


  • You might have heard of personality type tests, but did you know there are twelve distinct Self-doubt Archetypes?
  • Your Self-doubt is specific and personal to you. And it always makes complete sense.
  • Take the quiz and find out your flavour of Self-doubt.
  • You'll get your FREE archetype ebook delivered to your inbox packed with experiments and ideas for how to interrupt your self-doubt.