10,000 HOUR RULE

The 10000 Hour Rule is just that. This is the idea that it takes approximately 10000 hours of deliberate practice to master a skill.
To become an expert in something it takes 10,000 hours of practice

               10,000 hours = 3 hours/day x 10 years

What makes people like Bill Gates, Wayne Gretzky, and Steve Jobs successful?

Someone like Bill Gates had a passion for computers, but he also had the opportunity to put in 10,000 hours programming at a state of the art computer early in his teens.
Without that opportunity, he probably would not be who he is today. Those 10,000 hours allowed him to take advantage of another opportunity which was starting Microsoft when the time was right.
There are a lot of bricks that have to fall in place, but nothing happens if you do not practice.

Souirce: Outliers, Malcom Gladwell

Name	Date of Birth	Age Started playing	At AGE	First Achievement
Steffi Graf	14-Jun-69	4	18	European Championship -1982, Grand Slam – 1987
Monica Seles	2-Dec-73	5	17	French Open 1990
Martina Navratilova	18-Oct-56	6	19	Grand Slam runner up 1975
Andre Agassi	29-Apr-70	5	16	Turned Professional at 1986
Boris Becker	22-Nov-67	4	17	Won Grand Slam – 1984
Sachin Tendulakar	24-Apr-73	4	16	First International Test Match - 1989
Sidney Crosby	7-Aug-87	2	13	Nova Scotia minor Hockey
Wayne Gretcky	26-Jan-61	6	17	First $1.75 million dollar contract
Mark Messier	18-Jan-61	4	18	Professional Hockey with Edmonton Oilers