Wiktionary
occupy oneself
vb. (context idiomatic English) To keep busy by doing something
Usage examples of "occupy oneself".
But perhaps for that very reason, my doubts whispered, the Glass Bead Game was merely a formal art, a clever skill, a witty combination, so that it would be better not to play this Game, but to occupy oneself with uncontaminated mathematics and good music.
Life is too short to occupy oneself with the slaying of the slain more than once.
One can occupy oneself with lovemaking for only so long before requiring rest.
Five weeks is a long time to occupy oneself aboard a bucket-I wouldn't mind a long nap.