Learn to care for yourself. Your emotions will feel easier to handle when you're well fed, well rested, hydrated, sober, and you've had some exercise lately.

Prioritize sleep. That means using your time wisely so you're not studying all night.

Sure, go out and party sometimes, but not all the time. Just because you can recover from a hangover in like 20 minutes doesn't mean you should make a habit of it

Eat vegetables. And fruit. And protein. Get protein and produce in every meal.

When your body feels good, your mind will feel better than it would if your body felt like crap.