sorry to hear that, i felt like that at your age but life can suck at any age, that's the whole point it's a learning process but it can be made a lot easier with magic. How about lighting a white candle and write down on paper all the negative things that you'd like removed from your life then say out loud -
i pray to my guardian angel to hear my plea, remove all negativity, replace it with happiness, i implore and make me smile for ever more.
burn the paper in the candle flame and imagine you are burning away all your problems. Blow out the candle, imagining the smoke is taking your prayer up to the heavens. Repeat the spell until the candle is consumned.
Also you could try saying an affirmation. If you need advice on this i wrote a book on affirmations and i'd be happy to give you advice on the subject, free of charge. You can message me for this.