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.
1 terabyte is equal to 1000 gigabytes, or 1012 bytes. However, in terms of information technology or computer science, 1 TB is 240 or 10244 bytes, which is equal to 1,099,511,627,776 bytes.