Fantastic to see Stoicism getting some attention, I've been applying it for a while and it has hugely improved my mental health and outlook. Stoicism is the most practically useful philosophy I have encountered, and I have dabbled in many.
This cheatsheet is great, and I can personally recommend negative visualization. It has removed a lot of anxiety in my life.
"What happens when you lose, everything / you just start again / you start all over again"
I've found a useful way to keep stoic thought in my everyday life. I almost never use elevators and use the stair climb as my chance to do some negative visualization. It's a good combo of removing convenience from my day, exercise and thought. You also get a nice sense of relief once you move past the negative and arrive at your floor.