To turn one's
gaze inwards from time to time, even if only for five minutes daily at
the same time. In so doing one should sink down into oneself, carefully
take counsel with oneself, test and form one's principles of life, run
through in thought one's knowledge — or lack of it — weigh up one's
duties, think over the contents and true purpose of life, feel
genuinely pained by one's own errors and imperfections. In a word:
labour to discover the essential, the enduring, and earnestly aim at
goals in accord with it: for instance, virtues to be acquired. (Not to
fall into the mistake of thinking that one has done something well, but
to strive ever further towards the highest standards.)