67DayChallengeDay 18 – Two Types of Happiness & Contradiction Bias – #67DayChallenge Jonathan Chew / March 4, 2017
67DayChallengeDay 15: Visiting Shanghai Disneyland #67DayChallenge Jonathan Chew / March 4, 2017 https://www.youtube.com/watch?v=4gzzuXqaB2Y&t
67DayChallengeDay 13 – Eulerian Destiny & Learning While Throwing Up – #67DayChallenge Jonathan Chew / January 30, 2017