Self-confidence is the key to well-being. Here are 5 ways to increase yours

Publisher's Note: Season 10 of the Chasing Life With Dr. Sanjay Gupta podcast explores the science of happiness. You can listen to episodes here.

(CNN) - Everyone knows them: people who always seem to know what they are doing. They like to take control of a situation, express their opinions as if they were facts or throw themselves into a project with the conviction that they will succeed - with or without the required experience.

What magical substance was sprinkled on their cereal that gave them this superpower?

"Trust is probably the single most important resource for human well-being ...