1. Make sure your college degree is worth it. Will it lead to a good job. If not change your major or go to a trade school. Don't follow through just because you started. Follow through because it's good for your future.
2. There are lots of ways to get a side hustle and if you don't have a side hustle (or 2) then you are killing yourself financially. Do cryptocurrency bounties for ICOs. Mow lawns. Earn money where you can get it!
3. Stay away from debt.
4. Invest as much money as you can.

I hope this helps!