短文填空。
根据下列短文内容，在短文后的空格处填上一个恰当的词，使短文完整、通顺。
As teenagers, you have many dreams. These dreams can be very big, such as winning the Nobel Prize, or they can be small. You may just want to ______ one of the top ten students in your class. 
Once you find a dream, what do you do ______ it? Do you ever try to make your dream real?
Follow Your Heart by Australian writer Andrew Matthews tells us that making our dreams real is life’s biggest challenge. 
You may think you’re not very good at some school subjects, or that it is impossible for you to become a writer. These kinds of thoughts _____  you from reaching your dream, the book says. 
In ______  , everyone can make his dream come true. The first thing you must do is to remember the dream in your mind. 
Don’t let it leave your heart. Keep telling yourself what you want. Do this step by step and your dream will come true faster ______ a big dream is made up of many small ones. Please never give them up.  There will be difficulties on the road to your dreams. But the biggest comes from yourself. You need to ______ which is the most important. Studying instead of watching TV will ______ to better exam results, while saving five yuan instead of buying an ice cream means you can buy a new book. As you get ______  to your dream, it may change a little. This is good as you have the chance to learn more skills and find new interests.