I used to be very worry-prone too in the past. Stoicism (the philosophy) changed my life. This book provided a very clear introduction, and I make it a habit to

I used to be very worry-prone too in the past. Stoicism (the philosophy) changed my life. This book provided a very clear introduction, and I make it a habit to reread it every year: https://www.goodreads.com/book/show/5617966-a-guide-to-the-good-life https://www.goodreads.com/book/show/5617966-a-guide-to-the-g... I also recommend giving Buddhist mindfulness a try (this book is great: https://www.goodreads.com/book/show/64369.Mindfulness_in_Plain_English https://www.goodreads.com/book/show/64369.Mindfulness_in_Pla...), but in the end Stoicism seems to be more suited to the pragmatic, analytical mind of a programmer, because it provides a very logical approach, as opposed to the more spiritual nature of Buddhism. I seriously cannot overemphasize the improvement Stoicism has brought to my life. I went from having a lot of the experiences you are having (without the physical problems though) to living an almost completely worry-free life.