In addition to what others have said, I think a lot of people would agree that their 20s were the most difficult time in their lives. It’s a stark contrast from your life leading up to it, where everything from nap time to senior prom has been planned out for you, your job is simply to attend. Around your age this changes and you’re “given the keys” and have much more freedom to choose your path. (This is very much an oversimplification and does not apply to everyone)

This will sound kinda strange but for most people, at ~20 you still haven’t really settled into the person you will be for the rest of your life. Your brain is still developing and changing. It’s a time for turbulence and self-reflection for many, and I absolutely would not take your current outlook as “this is it.” You still have a lot to learn about yourself and the world, and I mean that in the best way.

It does sound like you could be overtaxing yourself, but others have covered that already. Try not to take things too seriously, and make sure to stop and smell the roses. We’ve heard that so many times that it’s easy to overlook what an amazing piece of advice it is. All of the happiest people I know are the types that do literally, and figuratively, stop to smell the roses.