“The way to becoming the best in your area of calling is to invest more time than anyone else in that area of life.” WorldLifePurposeTimeHumanityWorkWealthPovertyGreatnessProduceCallingWasteInvestmentValueProductivityConversionGiftGreatProductConvertArea Of CallingBecoming The BestWay To GreatnessTime I Book:How To Become Great Through Time Conversion: Are you wasting time, spending time or investing time? Source: How To Become Great Through Time Conversion: Are you wasting time, spending time or investing time?