Your friendly neighborhood Dr Kyak here, with some notes on stress during dental school.
Different types of stress. You spend the first 2 years trying to get into the clinic, and the last 2 desperately striving to get out of it. The initial stress of exams q2days shifts to patients who don't show up, faculty who seem like dicks (and absolutely may be) but in general are just trying to help you to learn our profession, cases that go south for no fault of yours and now you need another RPD to graduate, patient-boards that are incredibly high stakes, plus now you need to look for a residency or job, and that stack of debt is climbing to unsustainable levels.....
Here's what you do: find some damn hobbies. Whatever you do, provided it's not medicine or dentistry or patients or any of that. A good friend of mine is an auto mechanic every couple weekends, and no one knows that the #1 student in his class is a grease monkey q2 saturday. I lift weights, go bowling...during D1 I rebuilt a piano then became a Big Brother, and have started work on becoming a pilot. One classmate of mine has an unhealthy obsession with model trains. The Golf Bro Dentist Squad are easy to spot. People with families especially kids are stressed, but get to go home and play with tiny humans after school. Ideally, this is a hobby you can actively do for a few minutes to an hour or so, every day.
OTOH, some of your classmates will develop major problems with Sex, Drugs, or Rock'n'Roll. Some are "killing it on Tindr" but are becoming dead inside, plus now have this worrisome rash from a ONS that seemed like a good idea at the time but now they can't track down. Others begin lifelong struggles with alcohol/drugs (it's not a joke guys, please get help if you notice you're slipping) because they can't handle the stress. And I can't even imagine what a RocknRoll problem looks like.
We'll lose a dental student or two every few years to suicide.
Dental school stress isn't a joke. For me the overall level didn't change, just the specific agonist on my stress receptors.
Find stress antagonists. Develop hobbies that let you have dreams about something outside of occlusal anatomy (seriously, those nightmares were the "wake-up call" sign that I needed help). For you pre-dents, spend time learning how to sew or knit or fly or weave baskets before the real stress hits.
And if it gets to be too much, do something, anything, before you give up. Remember that it gets better. Spend time with your family. Go fishing. Get help from a psychiatrist. Go to the shooting range (a personal favorite when feces collides with air circulation appliances). Masturbate. Take a 5 minute walk outside. Ask the good DrK right here for a Rx to go kayaking. Go play chess at the VA and get some perspective on life. Whatever you do, go do that thing for a few minutes.
Invest a few minutes per day in making sure that you remain a functional human person.
We're in this together gang. Just remember: It gets better.
dk