annualbalancebeautifulbigbillboydbuffettchangeschristinedanieldaviddiversificationfinancialglobalgoalshappinesshealthheartinsuranceinvestingjohnlessonsletterlifemanagementmanagingmarketmattersmedicaremeetingopportunitiesplanningplansrecentreviewsecurityshareholdersimplifysmartersocialstockstrategiestakeawaystaxthingsunderstandinguswarrenwork