There's a plenty of occasions, causes and distractions to make your mind wander. To me personally the most prominent ones are when reading a book (which is also the most infuriating) and while riding some sort of public transport. The latter one helps me to reduce head buzz which is generated by randomly reading HN posts or working on a demanding task. Reading a book, where I actually need to concentrate on the book,…
It has always been a frustrating thing.