Never look for your work in one place and your progress in another.
Man is not worried by real problems so much as by his imagined anxieties about real problems
If you hear that someone is speaking ill of you, instead of trying to defend yourself you should say: 'He obviously does not know me very well, since there are so many other faults he could have mentioned.'
Progress is not achieved by luck or accident, but by working on yourself daily.
Authentic happiness is always independent of external conditions.
Keep your attention focused entirely on what is truly your own concern, and be clear that what belongs to others is their business and none of yours.