- Picture Books
- Ages 3–7
- Contemporary

Big Bright Feelings: Ruby's Worry
Book 2 of 10 in Big Bright FeelingsView the full series
Ruby has a worry, and the bigger it grows, the less she can enjoy anything. Tom Percival makes anxiety visible as a physical, growing thing, and shows that talking makes it smaller. The go-to recommendation when a child 'can't stop thinking about it.'
- Best for3–7
- FormatPicture
- Length32 pp
- Read aloud~6 min
The vibe
What it’s like.
Style
- Lyrical
- Conversational
- Repetitive
Tone
- Warm
- Gentle
- Heartwarming
- Thought provoking
- Cosy
Themes
Experience meters
What’s it about?
The story.
Ruby is a happy child. Then one day she finds a worry. It's small at first, so small she can almost ignore it. But it follows her everywhere, and grows, and the bigger it gets the less she can enjoy anything at all. Ruby looks at the other children and they all seem fine. Nobody else has a worry like this. Tom Percival makes the worry visible: a yellow scribble that begins small and expands across the pages until it is enormous, pressing in from every side. The resolution comes when Ruby finds another child who also has a worry, and when they share them, both worries shrink. It is the mechanism of every therapeutic conversation about anxiety, rendered in picture-book form without losing any of its truth. One of the most consistently recommended books for children who struggle with worry: precise about the experience, gentle in the resolution, and entirely without condescension. The book parents reach for when a child says 'I can't stop thinking about it.' The breakout title of the Big Bright Feelings series, and its best-known entry point.
Fit check
Right for your child?
Where it lands by age
- 1
- 3
- 5
- 7
- 9
- 11
- 13
- Best fit · 3–7
- Read aloud · 3–8
- Independent · 5–7
Prose load
Light
Visual support
Very high
Reluctant-reader friendly
Workable
Read-aloud quality
Excellent
Works well for
- Reading aloud
- Bedtime
- Reading together
Nothing in the book is likely to concern most parents. Safe to recommend without preview.
Bedtime suitability
4 / 5 · Bedtime-friendly
Sensitive-child
5 / 5 · Good fit
Graphic intensity
1 / 5 · None
Best for
- Anxiety support
- Discussion starter
- Gift book
- School themes
- Pshe resource
Avoid if
No common reasons to avoid this one — a rare clean sweep on the sensitivity flags.
Particularly good for children who are…
- Anxiety and worry
- Low self esteem
- Nightmares or fears
- Starting school
In the classroom
How it works in school.
Tom Percival's flagship emotional-literacy series — each picture book explores a big feeling (worry, anger, shyness, jealousy and more), making them the go-to PSHE read-alouds.
A book children love that happens to support school — never a stand-in for the texts a class is taught with. Reviewed for the classroom · June 2026.
Why it lands
Why they love it.
Why kids love it
Children recognise the relief of seeing a worry shrink the moment it's spoken aloud. The book gives small readers permission to admit something they didn't quite know they were allowed to admit — which is exactly what makes the yellow blob, and Ruby finally talking about it, stay with them for years.
- Being understood finally
- Friendship and belonging
Why parents love it
The conversation-starter you didn't have to start. Hand it to an anxious child, read it together, and the book does the hardest part for you — naming the feeling, showing what happens when you say it out loud. The book parents reach for the first time a child says 'I can't stop thinking about it.'
- Conversation starter
- Bedtime appropriate
- Quick to read
- Beautiful illustrations
In the series
Big Bright Feelings.
10 books · open the series →
About the author & illustrator
Tom Percival.
If you liked this
Three ways out of this book.
If you liked this, try…
Lateral matches. Same shelf, different texture.
Come into this from…
Easier or preparing reads — perfect lead-ins.
Where to go next…
Escalation reads — a step up in scale, silliness, or stakes.
More like this…
Books that share themes and topics with this one.
Where you’ll find it
On these reading lists.
Buy or borrow
Pick up a copy.
- Bookshop.org ↗
- Waterstones ↗
- Amazon UK ↗
- Hive ↗
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