Is self-belief all you need? Luke Littler reached the final of the World Darts Championship at the age of just 16. Experts say his belief in himself was key to his success.
The teenage sensation who preps with pizza

Glossary
Famous - Very well-known.
Darts - A sport in which players throw sharp objects called darts at a round target, or dartboard.
GCSEs - National exams taken by 15 and 16-year-olds in England, Wales and Northern Ireland.
Omelette - A dish made from eggs fried with butter or oil in a pan.
Talent - Natural skill.
Confidence - Having little doubt and a feeling of trust.
Experts - Someone who knows a lot about a particular subject.
Doubt - Not knowing what to think or believe.