I started a few months ago David Burns Feeling Good book. But unfortunately procrastinated reading it further, thanks for reminding me to finish it finally.
>"The main idea behind CBT is to go against the grain" [...] "it's the opposite of bullshit spiritual retreats in Peru "
I had on my first trip some mixture of feeling of dying(the burning in hell kind of dying), a panic attack and an existential crisis. So I don't think that this is the opposite of going against the grain. I got really confronted with the negative aspects of myself (although nothing lasting came from it eventually). But I get your point, your approach is to grow oneself more stoic and stronger instead of having feel-nice experiences.
> Short term fix: I bought a Xiaomi Mi Band 2
Will buy one, thanks for your advice