1. To motivate yourself for any achievement requires clear goals and an optimistic, can-do attitude.
    要激励自己获得成就需要有明确的目标，以及一种乐观的、"我能行"的态度。

2. Studies of Olympic athletes, world-class musicians and chess masters show that their common trait is the ability to motivate themselves to pursue harsh training routines.
    对奥运选手、世界级的音乐家和国际象棋大师的研究表明，他们的共同特点就是具有促使自己坚持艰苦的日常训练的能力。