改善一件事最佳方式事獲得即時和具體的回饋。"改善一件事"就是可以"把我們手上的事做得更好",前述本身就是回饋。心理學名詞就是Carol Dweck的grow 成長。成長型心態growth mindset vs. fixed mindset。"To actively seek and welcome, be it positive or negative, is one of the most important factors for success(and happiness) in the long run. Conversely, nothing is bigger hinderance to personal growth than having a fixed mindset."成長型心態就是主動地尋求正面或是負面的回饋,這就是長期看來讓人成功/幸福的關鍵;相反的持有固定型心態就是一個人成長的最大阻礙。