Interesting to see this recommended. I love this guys blog, but I don't really like buying ebooks, particuarly of this type as I often don't get value from it

Interesting to see this recommended. I love this guys blog, but I don't really like buying ebooks, particuarly of this type as I often don't get value from it and i don't like the pormodoro technique myself, surprised that he recommended it considering he has ADHD, I find it hard to context switch, perfer working in longer chunks until something is done. What's the jist of the method?