Your little sister found your journal, and then shared it with your friend. I'm so sorry. That is a boundary that should NOT have been crossed. If you have it in yourself to make sure your little sister knows this, I urge you to try.
I can relate. When I was 18, my mother found my journal and read it dispite several warnings on it and in it regarding the fact that they were my private thoughts. This still effects me today. What I write on this site is the closest I can come to journaling.
I wish I could help you, Jason, but sometimes being your age can be so overwhelming in itself. Are you seeing a therapist? Is there a school counselor you can talk to?
Believe it or not, the fact that you are having these thoughts and feelings are a good thing. However, not having someone to talk about them with can make them more difficult to face.
I wish you the best.
Revenge is nothing more than another way of perpetuating abuse.
What the world needs now
Is some new words of wisdom
Like la la la la la la la la la.
Having a friend who will keep a secret for you is worthless compared to a friend who won't keep a secret from you.