
Mental Toughness & Self-Discipline: Mastering the Art of Samurai's Discipline to Achieve the Mindset of a Warrior and Boost Willpower, Increase Concentration, and Build Self-Confidence
ページ: 132, ペーパーバック, Blu Sal Digital Marketing Ltd
www.amazon.co.jp/dp/1801110727/ref=asc_df_18011107271612197000000/