I'm sooo depressed!!!!!! Help?

I'm only 16 but I have a pretty crazy life! I've moved A LOT in the last 10 years. My grandpa just died. My parents are splitting up after 20 years! :( I might be moving back to California and that means I'll have to leave my best friend. I don't know what I'm gonna do without her! I've always been kinda "weird" but shes the one person who gets me. I've been really stressed out lately! And now I think I'm becoming depressed again...I think the only thing keeping me alive is my favorite band, Bon Jovi<33 I don't know what to do, so I don't feel stressed out or depressed. I'm only 16, I shouldn't feel this way!