【答案解析】Self-confidence is one very important factor for success, but there are two other equally important factors: knowledge and sensitivity. All three are basic elements which contribute to a successful career and a happy lifetime as well.
One needs to feel one can accomplish a task. If one thinks he is incapable of doing something, he or she will not succeed. For example, if you think you are going to do poorly in an important test, you will probably do poorly. It is important to tell yourself that you can do it well. If you have confidence in yourself, you will probably do well.
Even if you have a great deal of self-confidence, you won"t be able to do well without sufficient knowledge. You have to understand your subject very well. You have to work hard on the subjects or on preparation for a certain issue. With knowledge and self-confidence you have a better chance of success.
In areas other than exams, you will need to be sensitive to your surroundings, to your co-workers, and even to such minor things as a smile to a cleaner. You will need to know whether you should talk or keep silent; you will need to know whether you should take the lead or let others. This is a difficult skill to learn, but an important one for success.
These three qualities, self-confidence, knowledge, and sensitivity will help us to accomplish our life goal and as well as help to create a harmonious society. Alone, none of these factors will help you succeed. But together, they ensure success.