Can we learn to be happy? More and more children are coming forward for help with their mental health. Some say we need lessons in happiness.
NHS data exposes explosion of mental illness

Glossary
Predators - Animals that prey on and eat other animals.
Adapt - Change to fit a new situation.
Indigenous - Ethnic groups who are the original or earliest-known inhabitants of an area or country: for example, Native Americans in the USA.
Techniques - Ways or methods of doing something.