Gladwell repeatedly mentions the "10,000-Hour Rule", claiming that the key to achieving world-class expertise in any skill, is, to a large extent, a matter of practising the correct way, for a total of around 10,000 hours
3
21
1092
10920
You have reached 10.000 hours of deliberate practice! You might even do it:
2.7 hours/day
9.2 years