“The secret of happiness is variety, but the secret of variety, like the secret of all spices, is knowing when to use it.” Keep listening for more. 

Links to Gilbert's Ted talks:

https://www.ted.com/talks/dan_gilbert_the_surprising_science_of_happiness

https://www.ted.com/talks/dan_gilbert_why_we_make_bad_decisions

https://www.ted.com/talks/dan_gilbert_the_psychology_of_your_future_self