The student must earnestly try to learn the lessons of his own experience by considering situations as impersonally and unemotionally as he can. By meditating on them in a cool, analytical way--ferreting out past blunders and not sparing himself--he may uncover some of the weaknesses impeding his progress. He should then make every effort to correct them.
-- Notebooks Category 4: Elementary Meditation > Chapter 4: Meditative Thinking > # 220