One such is the need to ponder every living thing with which I am confronted. The slightest encounter arouses in me the most peculiar urge to think. […] I am possibly a somewhat high-strung person, but I am also a precise one. I feel even the most trifling losses, in certain matters I am meticulously conscientious and only occasionally am I obliged, for better or worse, to command myself: Forget this! A single word can thrust me into the most monstrous and tempestuous confusion, and then I find myself utterly possessed by thoughts of this apparently minuscule and insignificant thing, while the present in all its glory has become incomprehensible to me. These moments constitute a bad habit.
— Robert Walser (quoted here)