Learn New Skills in 15 Hours: The Essential Guide
A good strategy to take is to pick a resource (maybe a book, class, or method of learning) and apply it rigorously for a predetermined period of time. Once you apply yourself aggressively to that new method, you can step back and evaluate how well it is working and whether you feel it makes sense to continue with that approach or try another.
Scott Young • Ultralearning: Master Hard Skills, Outsmart the Competition, and Accelerate Your Career

you can become fluent in three months, but fluency won’t be achieved if you don’t do the work! You have to live up to your side of the bargain—you have to put in the time and stick to the plan. Also, the process requires a lot of strategic mental and emotional adjustments.
Benny Lewis • Fluent in 3 Months: How Anyone at Any Age Can Learn to Speak Any Language from Anywhere in the World
The future teachers had practiced four thousand hours in their lifetime. The good performers, eight thousand hours. And those who were categorized as stars? Every single one of them had practiced at least ten thousand hours. And here’s the compelling part: There wasn’t a single violinist who had practiced ten thousand hours who wasn’t a star. In ot
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