頹喪

最近比較煩：一個哲學思考 by: 黃煜文; 史文德森(Svendsen, Lars) (Language materials, printed)

消除沮喪 by: 霍克(Hauck, Paul); 鍾尚熹 (Language materials, printed)

無力感：從無力感中解脫,才能找到幸福的能量! = learned helplessness by: 張亞薇; 朴璟淑 (Language materials, printed)