13 Reasons Why
I would say out of all the characters in the book Clay Jensen has changed the most. Clay had listened to those tapes and has realized that what you say around people can affect them even if you do not realize it. It may even cause the person to kill themself. He learned to think before he acts because sometimes even if you may not think so, someone could get hurt by something you say. Also, another thing he has done that he changed about himself is to not judge people because there is a lot of things you do not know about a person until you really get to know them. Hannah had a ton of secrets hidden inside of her and if Clay would have reached out to her to talk to her about them, she may have not killed herself. Clay has always been a nice guy to everyone most of the times, but now that he knows what can really affect people he can start to tell people to maybe watch what they are saying about someone because it sometimes may not even be true. Clay can change many people by doing this because many people that he is around assume things and do not care to think what the other people have to say. Overall, Clay has changed immensly throughout this book because he has learned many new things to help him be a better person!