William Wobbly and the Mysterious Holey Jumper, Paperback by Naish, Sarah; Jefferies, Rosie; Evans, Megan (ILT), ISBN 1785922815, ISBN-13 9781785922817, Like New Used, Free shipping in the US

Sometimes William Wobbly gets very anxious. When he is anxious he'll often turn to chewing his jumper or hiding under his school desk. But luckily his mum knows how to help cope with those wobbly feelings. This is the perfect story for any child who uses problematic coping mechanisms to deal with fear or anxiety.