Given the task definition and input, reply with output. In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

Article: It is true that shyness can be a disadvantage socially for those who suffer from it seriously. I mean real shyness, not somebody who is simply quiet. Quiet people could be shy, but on the other hand, they may just be observing because they are unsure of you or others in your company. They may be capable of being extrovert and sociable, but on some particular occasions, they are quiet. I have learnt from my experience that those who observe and listen more and talk less can gain a position of strength. This means that even a very shy person, the type who is reluctant to talk in company , especially new company, can become a strong person in just about anything they choose. Remember, knowledge is power, and a shy introvert is in a better position to gain knowledge than an extrovert. Introverted people can give great attention to learning, and as good listeners they can take in an enormous amount from others. Over time, people can come to respect them far more than the extrovert who speaks a lot. Usually about themselves. What does it take , then for a very shy person to be that successful person they have always wanted to be ? They may only need one more thing to push themselves on their way. They need to dare themselves to take the leap; and when they do , they will probably find all the knowledge they have gained over the years will help them on their way to the top in their chosen field.
Answer: have a good attitude to learning
According to the author, introverted people can be successful because they usually _ .