Facts To Know!! The average person uses 13 different approaches to monitor and handle their time. 10-12 minutes spent organising your day will save at least 2 hours of lost time and effort over the day. Productivity decreases by as much as 40% when people attempt to perform multiple tasks simultaneously. 95% of failed marriages are attributed to poor management of time. In the last three decades, working time has increased by 15% and leisure time has been lowered by 33%. Time Management Watch short video introduction on what Time Management looks like.