Also check out Hacking Your Education.
It gives a lot of great advice, and many of the examples given are people that were either home schooled, "unschooled", or dropped out.
I wish I had read it before I started my degree so I could have spent time on the things that would have really enriched it.
Good luck!
Have you heard about the movie Class Dismissed? It's currently in limited screenings, but they are doing them all over the country. The dvd will be out in Spring 2015 I think. It chronicles a family as they make their decision to homeschool and shows some great resources and viewpoints. Make your education about YOU! What are you interested in (besides math, etc., you can always catch up on that)? What are your passions? Check out Blake Boles, Unschool Adventures, this book, http://www.amazon.com/Hacking-Your-Education-Lectures-Thousands/dp/0399159967/ref=sr_1_1?ie=UTF8&qid=1419153160&sr=8-1&keywords=hacking+education, and follow your passion and your dreams.
Please seek help for depression and, suicidal thoughts, and anxiety. And also know that these are normal teenage things to feel.