In the past,scientists thought attitudes never changed.
Now,many psychologists think people can become more positive.
There are many different ways to change.
Here are some examples.
First,think about good events in your life.
At the end of a day,ask,"What good things happened to me today?"
Think about these things for a few minutes.
Second,find fun activities to do.
Laugh at a funny movie or read a good book.
Finally,always try new things.
For example,you can talk to people you don't know or shop in a
different store.
Do different things every day.