A couple of thoughts:
The one thing I learned the hard way but has helped me immensely in life: you have time for what you want to do.
Unless you’re working 80 hours a week, it’s not that you don’t have time, it’s that you aren’t using your time effectively. Set a goal, spend 80% of time you aren’t using working on reaching that goal. When you get home from work, give yourself a set time to relax and then a set time to do your “homework”.
If you have a GI bill that means you aren’t paying for college, why not start now, one class a semester? Since you want to be an investor, focus on finance/business classes, maybe.
Lastly, you’re 24 and it sounds like you’re single? Instead of moving out of your house, why not bring in roommates? If you had 2 roommates and the each paid $600 a month all inclusive, you’re gonna probably find you have a lot of free money all of a sudden. Throw it in a savings account and call it whatever keeps you from spending it. My husband’s is his Tesla fund...