You can never go back and change what's been said or done, but you can learn the lesson to make thingis better next time.
Sometimes in life,we need a few bad days in order to keep the good ones in perspecitive
read interesting books. listen to beautiful lyrics and melodies. write your own stories. go to concerts, parks and museums. study hard. take care of your self. stay hydrated. learn a language. remind you friends that you're there for them. be kind, and feel.