On that note though, I think there's a difference especially in the modern world between doing nothing in what you are referring to as being 'productive' or valuable, and doing nothing in that you are literally wasting your time by say spending time on scrolling endlessly through social media. Both could be labeled as doing nothing, where one is mindful and valuable 'nothing' in the sense that one may enter a state of daydreaming or meditation or even rest and recovery. Whereas the other you really didn't get anything productive out of it, you just wasted time and distracted yourself from facing life as it should be experienced, which like you brought up should have moments of actually doing nothing, sitting there with your thoughts or just 'stand and stare'.