First, get in shape. Eat three meals a day. If you can't, get a social worker to help you find free meal centers and/or a food bank or food stamps.
Nothing wrong with any of it. The only reason we all pay for that stuff is that we're going to draft you whether you know it or not should some world conflict arise, and we want you to be physically fit. It's...payment for your unknowing status as a member of our citizen reserve forces, not charity. Nothing is for free, so don't feel like it.
Write down what you do like. Do that as a schedule in between your meals. Cut out video games and TV. They mess with your head if you play them too long. Exercise two hours each day.
Start your morning with jumping jacks. Do pushups.
Once you are in shape, look for employment or job training. You may need to go to some organization like JobCorps or ask a social worker to help you find part-time employment first.
If you are in an underserved district, see if your mom has family in a more metropolitan area where you could get job training and if you could do housework, etc. on a schedule and live with them. Keyword: ON A SCHEDULE. You have to know what they expect from you upfront so that you don't do nothing but their housework all day long and don't benefit yourself. Also, you NEED time to relax and that means boundaries. Set expectations and stick to them UPFRONT. Stick to it. If you're not getting yours, you don't have to help them either. You can continue to not have yours without staying with them. Always be ready to walk away from a deal.
Either way, eat regularly. Make your bed. Do jumping jacks in the morning. Do pushups. Do the things you like on schedule.
Google "hobbies" and try stuff until you find it. You may google "free hobbies" since you don't have a job yet.
Go to a career center. They're all over the country, so you can google "local career center". They give grants and training. You can look for an entry-level job. Write it into your schedule: "09:00am to 12:00pm, look for entry-level job. 12:00pm, eat lunch" In the meantime, you can volunteer two hours everyday somewhere to get used to it, and to get references. Schedule: "03:00pm to 05:00pm, volunteer at summer camp"
Get a bed time routine. Drink something hot even if it's just instant cocoa or hot water and milk. Read a book from the library. No computers or anything with a screen two hours before bed time. And try to keep your bedroom uncluttered and cool at night. Make sure all lights are off. Get multivitamins. I know it sounds expensive, but vitamin deficiencies make you depressed.
P.S. The key here is what you want to spend your time doing. Do you want to spend it eating three meals, making three meals, getting physically fit, going to the library, searching for a job for two hours each day(don't wear yourself out, nothing good takes more time than that), training for a job, volunteering, going to a community center to exercise, going to a park to exercise, etc. or what you are doing now. Make the change even if you feel depressed. After a month or two, you likely will notice that you are feeling somewhat better.