There are so many happiness lessons to remember - but it helps if we can boil them down into memorable little sayings. Happiness expert Gretchen Rubin has done exactly that in her latest book - Secrets of Adulthood.

Dr Laurie picked twelve of her favorite aphorisms from the book and invited Gretchen along to explore sayings such as “Happiness doesn't always make us feel happy” and “Accept yourself and expect more from yourself”.