Hello,
Thank you for bringing up this question.
My view on it is this is...
As a follower of God, the first thing you need to do is pray. Pray without ceasing almost, and ask God daily for help and comfort. Believe me, He will give it to you. You are his beloved child and he is madly in love with you each minute of the day, and no devil can stand in his way.
Secondly, occult things are clearly a bad influence on your life by your own admittance, so what I would recommended is completely distancing yourself from anything that has to do with it. Stop listening to the music you say influences you.
I know it's easier said than done, but talk to your parents or mentor figures in your life and ask them to help you. You need a strong Christian support in your life--Everyone does! Talk to someone about your struggles as soon as possible. It may seem hard, but you'll probably be surprised at how much relief you'll feel if you get support in this area. Read the Bible, readChristian books (I highly recommend anything by C. S. Lewis), hang out with Christian friends, hang out at Church. Do whatever you can to let God make a difference in your life.
Lewis said, "You must always remember that the Devil is a liar." God, however, is the fulfillment of Truth. Therefore, if you cling to God, none of the Devil's deception will even phase you.
Keep praying. I'm praying for you. God won't let Satan have you, because God loves you!