I feel so depressed lately, help me.?

So im 12 and i feel very depressed with my life, and i would just feel like crying my eyes out and i dont feel like going to school or going to sleep. what sad thing happened to your life that you just cant resist weeping about. Also im getting kinda bored with it too. what should i do to liven things up alittle? ask me questions if you wish. 10 points to best answer :) good luck and thanks