A big thing not mentioned yet in the comments is to figure out exactly what's burning you out.
Is it the work?
Is it the people?
Is it the office?
Is it the commute?
Is it the structure of the day?
Find out exactly what it is that's actually burning you out.
Some of these can be solved by becoming a remote worker (which comes with its own cast of problems). If you can snag a remote job you can do things like remote year (remoteyear.com (I think)), which sounds like something perfect for a 21 year old interested in experiencing new things (while making money instead of taking loans!).
On the other hand if it's the work in general then college may be a good step. That being said, I'm not as certain how to combat long term dissatisfaction with work. At the end of the day a lot of our job is doing the same sort of shit of over and over again. Wire this up here, move this button there, get this data heah, color this that there ova hea.
It's kind of a grind for a lot of us I think but it's still pretty interesting stuff to be doing with decent amounts of satisfaction to be found through out our projects.
Finally, if you're filled with emotions you'd like to get out, don't be afraid to go see a therapist. Having someone to talk to, who can get to know you, and work with you overtime isn't necessarily always just for the depressed.
Burnout sucks, it's real, there's no pill for it. Use all the tools available to you to combat it. Don't make rash decisions. Do write in a notebook and sit quietly for introspection. Do spend time figuring out the what, where, why, when, and how. Do consider all available options.