My Unperfect life :(

Gosh im so frustrated with my life i dont know what to do anymore. I have so many stress that you wont even imagen. Well it all started this year (my senior year) Well i started this class that we have to look for a job so i thought it would be fun. The teacher told us we had 3 weeks to find a job n damm you know finding a job now in days is so hard because of the economy. Well i did go eek for a job but i never got called back or anything so i called back and they all said they werent hireing the thing is that up till this date afte 10 weeks i cant find a job so she sent us to do volenteer work at this place over here really for from my house about 8 miles away so since my mom always works she can never bring me and my older sister works so she cant bring me either besides since i dont have a job i dont get money to put gas so i cant afford coming all the way over here which sucks because i dont want to let my teacher down with the girl that accepted us to do volenteer work. So im never home and im always here doing my 15 hours a week. I get so frustreted because i have to be here and then I get in so many trouble with my mom and i dont like it ugh sometimes i feel like runing away and never coming back because its hard for me to act normal when really im a mess. i dont know what to do with my live anymore i just need advice