One More BookFind a book
Cover of The Overthinkers' Club: Happy List
Illustrated · ages 9–12

The Overthinkers' Club: Happy List

Written by Nat Luurtsema · Illustrated by Cecile Dormeau

Book 1 in The Overthinkers' ClubView the full series

A funny, warm-hearted diary-format story about a twelve-year-old champion overthinker. When Birdie and her best friend start a 'Happy List' to fight their anxiety, it helps – until 'make new friends' lands on the list and gives Birdie a whole new thing to worry about. Gentle wisdom wrapped in genuine laughs.

  • Best for9–12
  • FormatIllustrated
  • Length352 pp
  • Read aloud~5 hr
Where to buyPaperback
WaterstonesIn stock
£7.99
Buy
Amazon
See price at Amazon
Buy

Affiliate links — buy through these retailers and we earn a small commission, at no extra cost to you.

The vibe

What it’s like.

Style

  • Comedic
  • Conversational
  • Epistolary

Tone

  • Funny
  • Warm
  • Heartwarming
  • Thought provoking

Themes

On the pageanxiety, overthinking, friendship, starting secondary school, blended family

Experience meters

Energy3/ 5
Humour4/ 5
Scariness1/ 5
Peril1/ 5
Wonder1/ 5
Cosiness3/ 5
Emotional intensity3/ 5
Conceptual intensity2/ 5

What’s it about?

The story.

Twelve-year-old Birdie is brilliant at overthinking. She starts with a tiny worry, spirals into worst-case scenarios, then catastrophises until the whole thing is completely overwhelming. Her best friend Chloe is pretty good at it too, so together they hit on a plan: a Happy List of things that might cancel out the anxiety. At first it works – dancing, gratitude and a good night's sleep really do help. But when Chloe adds 'make new friends' to the list, Birdie decides that's just one more impossible thing to fret about. Told with warmth and a very witty diary-style voice, and illustrated throughout by Cecile Dormeau, this is a sharp, empathetic portrait of that awkward stretch between childhood and the teenage years. Nat Luurtsema navigates starting secondary school, blended families, self-image and shifting friendships with real comic flair and a lot of gentle wisdom about worry – a reassuring, funny read for any young overthinker.

Fit check

Right for your child?

Where it lands by age

Aimed at 9–12s (the publisher pitches it at 10+), reading independently. The funny, diary-style voice and short illustrated chapters carry reluctant readers, while its handling of anxiety and secondary-school worries speaks especially to tweens on the cusp of that transition.

  • 1
  • 3
  • 5
  • 7
  • 9
  • 11
  • 13
  • Best fit · 9–12
  • Read aloud · 9–12
  • Independent · 9–13

Prose load

Moderate

Visual support

Moderate

Reluctant-reader friendly

Very

Read-aloud quality

Workable

Works well for

  • Reading together
  • Reluctant readers
Low sensitivity1 content warning

Preview before sharing if a child is sensitive to: mental health.

Bedtime suitability

3 / 5 · Workable

Sensitive-child

4 / 5 · Good fit

Graphic intensity

1 / 5 · None

Best for

  • Anxiety and worry
  • Funny and relatable
  • Tween life

Avoid if

  • Wants action adventure

Particularly good for children who are…

  • Anxiety and worry
  • Moving to secondary school
  • Making friends
  • New step parent or blended family

Why it lands

Why they love it.

Why kids love it

Birdie's runaway worry-spirals are painfully, hilariously recognisable, and her Happy List gives readers something to try themselves. The funny diary voice and Cecile Dormeau's illustrations make a book about anxiety feel like chatting with a friend who really gets it.

  • Being understood finally
  • Friendship and belonging

Why parents love it

Luurtsema handles anxiety, changing friendships, blended families and self-image with genuine wit and empathy, never turning it into a lesson. It's reassuring for anxious tweens and a natural conversation-starter about worry and mental wellbeing.

  • Shared humour
  • Conversation starter

About the creators

About the creators.

NL

Nat Luurtsema

Writer · United Kingdom

Nat Luurtsema is a British author, screenwriter and comedian who brings a stand-up's timing to fiction for older children and teenagers. After eight years on the comedy circuit she turned to writing, publishing the YA novel Girl Out of Water (also released in the US as Goldfish) and its follow-up, before moving into middle-grade with warm, diary-style stories such as The Overthinkers' Club: Happy List. Her writing pairs genuine laugh-out-loud comedy with a sharp, empathetic eye for the anxieties of the tween years: shifting friendships, starting secondary school, blended families and worrying about worrying. Illustrated throughout and pitched squarely at nine-to-twelves, her books offer gentle wisdom about mental health and self-acceptance without ever feeling like a lesson, making her a good fit for readers who want to laugh and feel understood at once.

More from Nat Luurtsema
CD

Cecile Dormeau

Illustrator · France

Cécile Dormeau is a French illustrator, based in Germany, who came to books from a background in graphic design and advertising. She is best known for warm, humorous illustration about everyday life, self-acceptance and body image, work drawn in a bright, rounded, character-led style. In children's fiction her illustrations bring that same affectionate humour to Nat Luurtsema's The Overthinkers' Club: Happy List, a diary-format story about a twelve-year-old champion worrier learning to manage her anxiety. Dormeau's expressive, friendly line is a natural fit for funny, warm-hearted books about growing up, friendship and the everyday wobbles of the pre-teen years.

More from Cecile Dormeau

If you liked this

Three ways out of this book.

If you liked this, try…

Lateral matches. Same shelf, different texture.

The Worry (Less) Book
Rachel Brian
The Worry (Less) Book

by Rachel Brian

Last reviewed · July 2026Suggest a correctionHow we recommend

More ways to wander the room