蹇，君子以反身修德。
释义：君子在面对挫折、困难的时候，应该反躬自问，修养品德。蹇（jiǎn），多指行动迟缓、困苦、不顺利的意思。
The best investment you can make is in yourself.
The moment of victory is much too short to live for that and nothing else.