写作思路：首先阐述一下坚持信念的意义以及重要性，再说一下没有信念的人生是残缺的人生，最后说明坚守信念，我心有主，成就人格的完美。
正文：
Life without faith is incomplete life, and life without belief is inaction life. If you don't stick to the faith, you can't achieve the perfection of personality.
没有信念的人生是残缺的人生，没有信念的人生是无为的人生。没有坚守的信念就无法成就人格的完美。
The firm faith is the light guiding the way in the vast ocean, the dawn yearning for in the long night, the heroic spirit of giving up life and forgetting the dead until death, and the lifelong pursuit of the brave. Xu Heng can stick to his faith, in that time of war, facing the thirsty pear, he can achieve "pear tree has no owner, my heart has a master". This persistent belief made his personality perfect.
坚守的信念是浩瀚的海洋中指路的明灯，是漫漫黑夜里渴望的黎明，是舍生忘死者至死不渝的壮烈，是勇敢者一生一世的追求。许衡能坚守信念，在那兵荒马乱的年代面对解渴的梨子，他能做到“梨树无主，我心有主”。这一坚守的信念成就了他人格的完美。
The firm faith is not only the grand picture of a generation of great people waving giant strokes, but also the persistent pursuit and selfless dedication of ordinary people; the firm faith is the dazzling stars in the sky, but also the plain and true goodness in the sand. Adhere to the faith, my heart has the master, to achieve the perfect personality.
坚守的信念是一代伟人挥动巨笔画下的宏伟画卷，也是普通人执着的追求，无私的奉献；坚守的信念是苍穹里耀眼的辰星，也是沙土里的平淡与真善。坚守信念，我心有主，成就人格的完美。
Beliefs are so important that it can change one's fate. Two little mice fell in a bucket of cream. The first mouse quickly gave up and drowned. The second mouse wouldn't quit. He struggled so hard that eventually he churned that cream into butter and crawled out.
Obviously， the latter mouse is the one who has his own beliefs. There are always hopes in his eyes that encourage him to fight， and fight， and fight. He never gives up when he is in some difficulty situations. Because the optimist sees the opportunity in every difficulty， while the pessimist sees difficulty in every opportunity. The first mouse is one of these kinds of pessimists. He holds no belief in his life and become the slave of his fate.
Thus， it can be seen that one with firm beliefs is likely to get successful and master his own life.本回答被提问者采纳