Why, though? What has produced that effect?
The modern world confronts us with a planet of people who are better than us at one thing or another and a planet of risks we have no ability to confront. We might work five years on a project that never ships without ever experiencing the gratification of chopping wood to burn that night. I would bet there's a genetic correlation between programmer / good at tech and overthinking / predisposition to anxiety; even if not, humans placed in an environment which causes our brains to run wild will look for some sort of peace. We find this from many sources - especially through addictions (legal, illegal, television, refreshing HN) - prescription medications (different from addictions? sometimes!) - but the idea of being able to train ourselves out of our internal agony is quite appealing.
Stoic philosophy itself is the foundation of the ideas which come to us through every part of culture, so people who are into tracing the source are liable to find it sooner or later.
I would not call myself Stoic but there is a lot of wisdom there. I particularly like Seneca and Epictetus. The best modern book for me is "A New Stoicism" by Lawrence C. Becker.
Later, I found that if I tweaked those techniques, they were also useful for staying focused and clear-headed in stressful startup situations, as well as compartmentalizing work and life, and a number of other things. In practice it meant that by adopting certain mental exercises, I was able to sleep better, work better, take care of myself better, etc. I didn't encounter the term "Stoicism" until several years after, and I found that its practices aligned pretty well with what I was already doing.
I don't call myself a Stoic because it's really not a religion or philosophy to me. It's more of a set of mental practices that help me go about my life with a clearer head. However, if you dig through Stoic writings, there's a ton that resonates.
1. Notice when I am feeling stress, anxiety, fear, anger, etc. Mentally identify and acknowledge the feeling, and then step out of the cycle. Meditate if I'm really having trouble detaching from the immediate situation.
2. Once I'm no longer stuck in the immediate situation, I have the space and mental presence to figure out the source of my problem. Why was I feeling anxious or stressed? What event caused it? What about it was bothering me?
3. Once I have that answer, I can understand my emotional situation rationally, and I can decide what I'm going to do about it. My goal isn't to stop feeling emotions, but rather to address the root cause or the mental pathway leading to it.
For the anxiety issues I mentioned, the conclusion to step 3 was to slowly recondition myself by exposing myself gradually to the triggering condition. Rationally, nothing bad was going to happen, so I needed my brain to learn that. I combined that with developing mental exercises to distract myself and get me away from the downward feedback loop of anxiety.
For general life situations, the answer comes closer to Stoic philosophy: understand what I can and cannot control, and then either decide to do something about it, or let go because further worrying about an effective dice roll is a waste of energy. Trying to influence the odds and making contingency plans counts towards "doing something about it."
The key to my happiness day to day was understanding that I actually have much more agency than I might initially assume. One or even several setbacks don't necessarily mean I fail my actual goal, and situations that look bad often only look that way because I think I'm out of options, or because I'm trying to eat my cake and have it too when I actually need to make a hard choice.
Among all of this, the key insight for me that CBT and meditation unlocked was that many of my limitations had a huge internal mental component, and if I can intentionally mold how I perceive the world, I can live much more effectively, and happily. The goal isn't to delude myself so much as to put myself in a mental state where I can be be more open-minded and deliberate.
I still think stoicism is interesting but you are better off reading the original texts especially Epictetus and some books from historians about that time-frame for some context and criticism.
https://www.cnbc.com/amp/2017/06/14/tim-ferriss-simple-strat...
It also just seems more sustainable than constant jubilee, and more honest for considering the possibility of failure.
It's pretty insightful to connect the increased interest in stoicism to the boom-and-bust cycle. As the specter of a bust looms larger (hallucinatory or not), I can imagine that people who would be affected by the bust might find themselves seeking out ways of psychologically weathering the storm. Stoicism ain't it, in my book, but it certainly presents itself as if it were.
I think there is value to be derived from Stoicism but I'm leery about any reason to commit whole-heartedly to an extreme.