When children's author Sally Gardiner's career first took off, friends assumed her extravagant spending was a byproduct of her newfound success.
Lavish spending sprees included a £3,000 bathtub, prints by English pop artist Peter Blake, and trips to Parisian boutiques.
Sally was in her early 40s when her debut book was published, setting her on a path to sales of 2.5 million copies and major literary prizes such as the Carnegie Medal.
"Suddenly, I am in a different place," Sally says, "and for the first time in my life, earning really well."
She says she felt "ashamed" by the amount of money she was splashing out - but was hooked on the dopamine hit.
