Regimented routines don't come easily

For most people, however, daily scheduled writing is neither an intuitive habit to adopt nor an easy one to sustain. As any drill sergeant or Mother Superior can attest, few humans possess the intrinsic self-discipline required to adhere to a strictly regimented routine day after day and week after week, no matter how beneficial its effects.

Helen Sword, Air & Light & Time & Space: How Successful Academics Write (Cambridge, MA: Harvard Univ. Press, 2017), p. 18