Seeing that the "workplace" is my home these days (and hence working a lot more than usual), I try to bike as much as I an (shorter rides 2-3 times a week) and a long tour on the weekend. Just finished 300-mile April as a fundraiser for the American Cancer Society.

This has helped thus far, but I feel the burnout is catching up with me these days, unexplained aches, sleeplessness etc are coming back...

In short: Drinking less, exercising more, sleeping better, and learning to say 'no'

I (sort of) wrote about this a while ago (can't believe it's been almost 9 years) while interning, but I think some of the same concepts apply. https://archinect.com/arch-ell...

I've learned sleep is a big thing for my stress relief. 

I still get out on the bike as often as I can, but I've learned I need to be more consistent with it ... 3-4 shorter rides a week is better for me than one big one on the weekend that takes the same amount of time.

Setting boundaries has become much bigger while WFH. It's easy to let work stress take over home life so I've had to set better schedules and realize that I can put off things overnight and get to them in the morning rather than staying logged on later to get ahead of something or catch up on something (whatever the case may be).

One thing I'm missing right now is a good break from it all. I haven't taken a decent vacation in way too long. I've got the time accrued, I just need to take it.

usually when I’m under stress i go take a 30 minute dump 

As for me, I do few things.  

1. Start a gratitude journal - Start writing about how you feel on that day, but write subsequent paragraphs with something that you are grateful for.. it could be small things.. Like, at least i have a job.. I can support for my family, my kids suck most of time but also great to have them, or I am not in Ukraine and going through what their people go through etc..  Being thankful and appreciating little wins distract me from zoning in on negatives...  
2. Going off of number 1, I tried to watch inspirational books, audio books, or movies that conjure up gratitude in me.  This is subjective and everyone reacts differently to movies, but I tend to watch people in extreme poverty and or those who find happiness in little things.. 
3. Taking a walk outside - Sometimes walking and running reset your mood for the day.  
4. Starting a new diet - I cut away sugar and carbs (because I am a diabetic).. It really helps my mood swings..
5. Just try a new routine - any of the above, or anything.. I think introducing a new routine can break off tendency to dwell in your dark place.. 

get organized...

I started scheduling in lunch every day so people won’t schedule me for meetings during my lunch time. If there’s an all office meeting during lunch time I will take my actual lunch break after the meeting. And I never eat lunch at my desk. I also schedule in blocks of time to answer email and get actual work done - especially if I am on a deadline.

I stop work no later than 6pm no matter what. I very rarely break this rule.

I make sure to get enough sleep, exercise 6-7 days a week (run and strength work), and eat relatively healthy. 

I also avoid driving as much as possible - I am lucky enough to live close enough to work to be able to bike or take transit. My bike route is mostly on separated paths and is pretty nice most of the time. I find driving in city traffic just makes me even more stressed and tired. Transit puts me in the best mood for work - I get in relaxed and mentally prepared.

1) define your work time as distinct & defined time...no letting it slide into personal time [this is really the biggest thing, imho]

2) for me personally, getting outside during personal time is essential for my brain health; when my heart rate goes up, my brain turns off & goes into primordial mode. Others may just want different brain engagement (social activity; non-arch brain activity: puzzling/taichi/learn portugese; cheer sports team; etc)

Good topic! Here are some articles we've published looking at this common issue in the industry...

Burnout, and the Architecture Work Culture

Burnout, Fatigue and the Architecture Workplace

How Overwork and Anxiety Led Architect Ben Channon to Focus on Designing for Happiness

Archinect Sessions Episode 121: Mental Health in Architecture

Working With Stressed Coworkers During COVID-19

The Importance of Physical Fitness in Mental Performance

Screen/Print #36: Harvard Design Magazine's "Well, Well, Well"

a lot of great suggestions here, but they rely on personal/individual decision making, which will help alleviate some of the stress, but is unlikely to change the source of it. if problems in the work place aren't addressed systemically, it will be left to you to mitigate what keeps getting thrown at you; burnout is a result of the widespread inability of individuals to do so.

hence, time to get organized.

Stress in the profession is by and large systemic coming from the top down. Some firms may be less stressful than others but all work in a system of low fees and rush schedules. People say to "care less" about your job to reduce stress but it's hard to do the bare minimum in an arch firm without being noticed. Might get away with it for a couple weeks than all of a sudden you out of a job.

(I keed, I keed!) (Well, sort of...)

I play Pac-Man.

Lifting weights 3-4x per week

Meditating. Usually a 10min session in the evening. Sometimes I'll do one mid-day while just sitting at my desk at work. If you've never meditated before, it's pretty wild to see how hectic and distracting our minds are. 

I quit my job because work is bullshit and this industry is a cesspool. 

Highly recommend everyone here do the same.

just say no!  very liberating!

Had two this morning, one was to resolve some homeowners red tag issue because he had been caught doing something illegal or without a permit.  The other was for a renovation, to a renovation that was a phased build on a project that was halted due to construction problems...I had to say no three times before the project manager got that I wasn't interested in working on a dog's breakfast that had already come out the wrong end! haha.

Felt good to say no!

What has helped me is to meditate in the morning, 10 minutes is all you need to clear your head. Work out a few days a week, throw some weights around. I've literally broken personal records on days where clients were driving me insane. Eating healthy, proper sleep, SAY NO and turn down everyone who you know will be a problem. I've found most of my biggest issues are from dealing with the wrong people.

A big part of dealing with stress is getting to the point where you really know your own personal stress threshold.

Whenever I feel that creeping up, I get up and walk; just walk. It's both meditative and gives me some nice mild exercise. Lather rinse repeat until I chill out enough to solve the problem giving me stress (yeah, sadly you generally have to eventually solve the problem....)

If I continually pass my personal stress threshold it's like getting injured trying to train my body; gains lost and time wasted.

Also, I try to increase competency. Usually the things that stress me out do so because.....I suck at them. Once I get better, I find those things aren't so stressful anymore.

Things outside of my control are well.....outside of my control. Someone else can stress over that.