This list includes TED and TEDx talks by: Martin Seligman, Dan Gilbert, Matthieu Ricard, Stefan Sagmeister, Sir Richard Layard, Rick Hanson, Ilona Boniwell, Lea Waters, Kristin Neff, Dacher Keltner, Brené Brown, Emma Seppälä, James Doty, Karen Armstrong, Rick Warren, Michael Steger, Adam Leipzig, Adam Grant, Robert Quinn, Edward Deci, Angela Duckworth, Emilia Lahti, Scott Geller, Barry Schwartz, Michael Norton, Daniel Kahnemann, Robert Biswas-Diener, Todd Kashdan, Scott Barry Kaufman, Mihály Csíkszentmihályi, Linda Hill, Jane McGonigal, Itay Talgam, Shawn Achor, Dan Ariely, Shane Lopez, Jonathan Haidt, Isaac Prilleltensky, Kelly McGonigal, Amy Cuddy – and me. Share and enjoy!
General
Compassion and Mindfulness
Meaning/Purpose
Motivation, Perseverance, and Grit
Decision-Making
Memory, Perception, Time
Leadership, Creativity, and Play
Work
The Greater Good
Miscellaneous
Mappalicious 
I think you’re missing the TED talk about Flow by one of the founding fathers of Positive Psychology: Mihaly Csikszentmihalyi. Here’s the link: https://www.ted.com/talks/mihaly_csikszentmihalyi_on_flow?language=en
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