I normally do both working hard and reflecting mostly everything what I or my teams do, its a matter of filtering out the things what are necessary and skip the task which not fits in this filter. When I think it is time to have a break I will have one, if I need a coffee in the Bar then I take one there and when I fell that its better to sit for an hour at the beach then I will do so, it works I´m doing this for about more than 15 years now. Life can be so god to you if you let it happen ;)