Breathe. Its going to be ok.

It feels hard being that age, I can understand why you are overwhelmed. Take a moment and sort out your thoughts, see what is bothering you the most and make an active plan. Life gets a whole lot harder when you finish school, when you look back you will realise that getting stuck in a cycle of negative thinking is just tiring and unhelpful. Make an effort to challenge those negative thoughts and you will see a change in your life.