Hopeless about everything

I dont necessarily want to kill myself but I often wish I won't wake up. I've never cut as a way to try to commit it's just the most effective way of venting out frustration and sadness. I've tried journaling, was even in therapy for awhile, but I've been out for more than a year and I've been unmedicated for several years. I feel like my life isnt ever going to get better. I feel like I was doomed from the start, molested and beaten as a child and now that I'm entering adulthood I don't know anything about how to live like one. I feel alienated and I'm trying to give signs to people around me but it just seems like nobody cares. I even told my adoptive father that I'm depressed outright and he just said "everyone gets sad sometimes". People tell me life isn't going to get easier but I dont know if I can live like this forever.