Take it seriously. Don't get lost in your own little problems. She needs help. Reach out to her. Stop her

 Don't fight with Mom. Spend as much time with her and talk to her as much as possible and the day they tell you whats wrong, don't leave her side for anything. Be there to say goodbye.

 I know you cry about once a week in Orchestra, but stick with it. Someday when your own Orchestra students cry during an audition in front of their peers, you will know just what to say to them.

 God IS real. You made your mistakes, be forgiven, get up quickly.

 It isn't that hard to be happy, just try.

 You can wait it out. You'll find friends who honestly care about you, don't lose hope.

 Just end it all already, it's not worth it.

 Trust him more. He's the one.