一个英语长句看晕了,求大师解析句子

一个英语长句看晕了,求大师解析句子
They spare no efforts in analyzing the cause of their failure and at the same time encourage themselves to become more confident so that they won't repeat their mistakes in their later examinations,.
求帮忙解析此句,越详越好
不是要翻译，这我也会。关键是怎么分析这个句子，成分怎么划分的等等。