Struggling.

Hey everyone, I just need to share in hopes for encouragement or advice... Things are very tough right now. Im working 10-15 hours a week on $7.50 and have yet to find a job to use my CNA. Im attending college too and my parents don't ever help me out financially, even though I still live at home (18 years old). If we know anything, it's how to fight. Everyday. We only see eachother for a few hours at a time. It's mainly my dads doing. He makes fun that I go to church (my parents haven't attended in 10 years). My moms not there for me like she's ways been, about 2 years now. She's admitted to not caring to care for others anymore. I feel so alone. My boyfriend works out of town and we argue a lot on weekends, only time we have together. He and my parents tell me im lazy and don't know anything and my dad cusses me. Points out all my flaws. Always had self image problems and they're getting worse. I got upset one day and was with my bf and starting take one pain reliever after the other, 5 in a row. Told him im almost half way to ODing hopefully. He didn't stop me...I stopped myself. I feel like I have nothing to live for. I drive crazy hoping I'll wreck one day. I don't always turn to God when I should. Doing it on my own is too much. I need help on how to better myself and with God... I can't escape the people in my life, I just can't cope the right way I guess. Im just so tired of feeling so worthless and cold hearted. I know I've become distant and mean Cuz it's all I know. "Don't become the person that hurt you" plays in my mind a lot (since there's more to the story...) i feel stuck and it's hard for me to have faith for better when all I've seen and been through is bad things. 
Thanks.