The National Research Council (2002) associates the indicators of self-management (self-control, perseverance, stress management and goal-setting) with personal and social assets that facilitate positive youth development in the area of psychological and emotional development.
A Petabyte is approximately 1,000 Terabytes or one million Gigabytes. It's hard to visualize what a Petabyte could hold. 1 Petabyte could hold approximately 20 million 4-door filing cabinets full of text. It could hold 500 billion pages of standard printed text.
Exabyte: An Exabyte is approximately 1,000 Petabytes. Another way to look at it is that a Petabyte is approximately one quintillion bytes or one billion Gigabytes. There is not much to compare an Exabyte to. It has been said that 5 Exabytes would be equal to all of the words ever spoken by mankind. Zettabyte: A Zettabyte is approximately 1,000 Exabytes.