While I was doing my (miserable) little tour, the Mistress of Frimousse ran much more seriously. And… no problem.
Under the pictures, a link to a motivating text for runners. But the advice given can apply to many other activities.
http://running.frimousseblog.fr/wp-content/uploads/2020/02/tulloh_en.pdf
Published in Runner’s World May 2003