I am addicted to music. What shall I do in order to reduce this addiction?

My dear

It is good that you know it is waste of time.
You tell your self that no use of listening.
 Try to read or listen Quran.
 Keep yourself busy with other things
 as read story book.
Clean your room.
 Read your book. Set up a target to get good grades .
Then if you be the topper, every body will respect you.