根据短文内容及首字母提示，填写所缺单词。
Have you ever had problems in your life and don’t know how to be happy? If so, you will find ‘Being a Happy Teenager’ written by an Australian  w   Andrew Matthews useful.
In this book, he says that we should  s   being angry and forgive others. The book tells us of useful skills such as how to put  w   you have learned into your mind to make your memory better. Many teenagers think that happiness  c  from good exam marks  o praise (赞扬) from other people. But you can still be happy  w  there are no such ‘good’ things.
S   comes from a good attitude (心态). If you learn from problems, you will be successful later on, or in the  f . Some school boys have problems such as being too tall or too short. But Matthews tells us that happiness can come from thinking about things in a positive (积极的)  w  .
If you are tall, people notice you and you can get a better view at the movies; if you are short, your clothes and shoes take less room in your bedroom! This is Matthews’s  m   important lesson of all: you choose to be happy!