In his book, he holds this phrasing to mean the belief in your own abilities (lever) and the belief in your ability to change (fulcrum). As a result, your mindset, which is the culmination of your attitude and worldview, plays a crucial…The 7 Principles of a Happy Life According to Psychological Research3053Alexander BoswellDanny SchleienSep 8, 2020·1 min readLove this analogy! I hadn't thought about positive psychology in this light, but it's quite illuminating.