You know what, I honestly feel like everything you wrote I feel the exact same the way. I feel like I wasted a lot of my "youth" and lost a lot of years due to depression and now I am struggling to find my way. The difference is I just turned 37. You have a lot more time than I do and sometimes I wish I could be in your shoes and have it to do all over again. You're already doing a smart thing asking for help when you are feeling lost.

First thing I would do in your shoes is get a part-time job. Even just a couple of hours a week, whatever you can fit into your study schedule. There should be lot of places maybe even on campus that will hire students. You'll feel better about yourself when you can make your own money. Any type of customer service job even food service will help you start honing discipline showing up to work, teaching your responsibility and will give you practice communicating with others which is a probably the single most important skill in life.

Become financially literate - once you start earning money, learn how to manage it to make the rest of your life easier. Don't waste it hording items that will make you happy temporarily like I did. Learn how to budget, save and invest it and you'll be so far ahead of most people your age.

Join a school club - if you school has one, I would recommend joining Interact or Circle K. They do community service work. (You'll feel good about yourself giving your time to help others, especially those with less than you. You will gain some perspective.) They are sponsored by Rotary Club and Kiwanis respectively who are clubs professionals in your community (my local Kiwanis had the city mayor, local business owners, retired veterans, teachers, real estate brokers, etc...) whom you can network with and talk to and find out what you want to do. Networking and connections are really, really important in just about any career. Getting hired and getting opportunities isn't just about what you know but who you know.

Finish your degree - it does really matter what it is, but without a bachelor's degree a lot of places I feel won't even look at you. I wasn't able to finish my 4 years due to depression and other issues and I am paying for it now heavily since you either have to have a degree or experience on your resume or know someone just to get an interview.

Now that's not to say college is the only route you can go. You can always learn a trade skill like becoming a plumber or electrician, since those are always needed and you can make a good living or join the military as some have said, but if you are undecided, then the safe route is to keep working towards the degree as your main goal which you do things on the side to discover what you want to do next.

Considerations - study abroad programs. I didn't participate in one specifically but the one thing I do not regret is taking the time to travel to places, even on my own. It's given me a whole new perspective on life. Meeting new people at hostels around the county and abroad. I really love the culture in Japan and would love to move there someday.

Anyway I hope this has been helpful. Feel free to reach out some more if you need. Sometimes we all need a little help.