Don't get discouraged or lose hope when you often fail to live up to your principles perfectly. When you fall short, just come back to them again. You will face many distractions from the world and human weaknesses — this is normal for any person. Don't be upset about this. Just love the one thing you can always return to: living like a philosopher and doing your proper work with care. When you come back to philosophy, don't treat it like a chore — the way some students reluctantly return to their teachers after playing. Instead, approach it like someone with sore eyes reaching for a soothing compress, or like a patient applying healing medicine. Don't make following reason into a show for others. Make it your comfort and relief.
Be not discontented, be not disheartened, be not out of hope, if often it succeed not so well with thee punctually and precisely to do all things according to the right dogmata, but being once cast off, return unto them again: and as for those many and more frequent occurrences, either of worldly distractions, or human infirmities, which as a man thou canst not but in some measure be subject unto, be not thou discontented with them; but however, love and affect that only which thou dust return unto: a philosopher's life, and proper occupation after the most exact manner. And when thou dust return to thy philosophy, return not unto it as the manner of some is, after play and liberty as it were, to their schoolmasters and pedagogues; but as they that have sore eyes to their sponge and egg: or as another to his cataplasm; or as others to their fomentations: so shalt not thou make it a matter of ostentation at all to obey reason but of ease and comfort.