Welcome to the site!
I totally empathize with how you feel, but I hope you don't really think beauty is everything. It's not. And it also varies widely depending on perception. I really, really believe that.
I also used to think being thin would make me happy, and I still think it will, but I don't think that if I am thin it will solve all the problems in my life. I'm pretty sure it won't.
There's tons of support and information on this site, including a forum for those with depression. I hope you check it out if you find the chats suit you.
I also hope that as you lose more weight you really do start to feel better. You've already started, and been successful (give yourself a pat on the back for that) so all you have to do is just keep going. And we're here to encourage you to do that.
Good luck beautifulmess.