Self-confidence
Self-confidence means trust in one's own ability. As a very important psychological quality， it brings your creative power to play， arouses you enthusiasm for work and helps you overcome difficulties. When asked of the secret of her success， Marie Curie answered， “My success lies in perseverance and self-confidence， the latter in particular.”
Self-confidence gives you light when you are in dark and encouragement when you are dismayed. It is self-confidence that inspires you to cope with any arduous task. With self-confidence， the goal you intend can be reached， and so can the hard nut be cracked.
Some people find most of the things impossible， saying， “It is beyond my ability to do the task.” or “I am not cut out for it.” In many cases， these are only lame excuses. When our heart is void of self-confidence， every hope is gone， and everything we are laying our hands on is spoilt.
Be honest with yourself about your strengths and weakness and manage accordingly.
可以从中截取一段~
本文为议论文，分三部分层层深入地论述了自信心这一可贵的心理素质。首段在给自信心作出简要解释后，接着阐明了自信心的重要性。段末恰到好处地引用了居里夫人的话来支持自己的论点。第二段进一步陈述了自信心的重要性。而在末段作者首先通过两句话生动地表现出了缺乏自信心人的心态，而后从反而指出如果缺乏自信心，则会一事无成。
参考资料：http://www.for68.com/new/2006/7/wu73958223112760024496-0.htm