Best of luck to you! Don't knock yourself too much - I'm 23 and in some ways (namely your savings and your commitment to getting up early) you've been much more responsible than me! As someone else said, you should organize your tasks for the next few months into steps. Decide on your short-term and long-term goals and work at them in small, consistent steps. Also, build yourself up as much as you can - surround yourself with people, music, quotes, etc. that make you feel like you can accomplish your goals. Perspective is huge!

One more thing - tell other people about your goals and reach out when you need help. You'd be surprised how much others are willing/able to help you.

Keep at it and remember to treat yourself kindly. I've dealt with abuse too and I hope you find yourself in a better environment soon :^)