A person will not make a real effort , if he believes that he is incapable.He feels that any effort would be _ 1 _. He won’t go at a job with the confidence necessary for _ 2 __, therefore he is likely to fail, and the failure will strengthen his belief in his incompetence ( 无能 ) 。 Alfred Adler , a famous doctor , had an experience which illustrates this._ 3 he was a small boy he was poor at arithmetic ( 算术 ). His teacher got the idea that he had no ability in arithmetic , and told his parents _ 4 she thought in order that they would not expect too much of him. In this way, they too___ 5 __ the idea, “ Isn ’ t it too bad that Alfred can ’ t do arithmetic ? ” Alfred accepted their ____ 6 _ estimate ( 判断 ) of his ability , and felt that it was useless to try ,and was very poor at arithmetic just __ 7 _ they expected. One day , only Alfred succeeded in solving a problem that __ 8 _ of the other students had been able to solve . This gave him confidence. He doubted the idea that he couldn ’ t do arithmetic and decide ___ 9 _ them that he could . His new _ 10 ____ confidence helped him to go at arithmetic problems with a new spirit . He now worked with interest , confidence and purpose , and he soon became good at arithmetic.