A serious life still needs unserious moments.

Seriousness is a good servant and a poor climate. A life aimed at real things still needs hours that are not aimed at anything, because those hours are where you rest, reconnect, and stop performing your own purpose. Without them, the seriousness eventually turns brittle and starts consuming the person carrying it.

Look at your week and find the part that has no productive justification at all. If you cannot find one, that is the finding. Put something in that has no outcome attached, and resist the urge to make it useful by tracking it or turning it into a goal.