Not everything matters equally, and success isn’t a game won by whoever does the most. Yet that is exactly how most play it on a daily basis. - Gary W. Keller

In one study, elite violinists had separated themselves from all others by each accumulating more than 10,000 hours of practice by age 20. Thus the rule. Many elite performers complete their journey in about ten years, which, if you do the math, is an average of about three hours of deliberate practice a day, every day, 365 days a year. Now, if your ONE Thing relates to work and you put in 250 workdays a year (five days a week for 50 weeks), to keep pace on your mastery journey you’ll need to average four hours a day. Sound familiar? It’s not a random number. That’s the amount of time you need to time block every day for your ONE Thing. More than anything else, expertise tracks with hours invested. Michelangelo once said, “If the people knew how hard I had to work to gain my mastery, it wouldn’t seem wonderful at all.” His point is obvious. Time on a task, over time, eventually beats talent every time. I’d say you can “book that,” but actually you should “block it.

Give each habit enough time. Stick with the discipline long enough for it to become routine. Habits, on average, take 66 days to form. Once a habit is solidly established, you can either build on that habit or, if appropriate, build another one.

Thinking big is essential to extraordinary results. Success requires action, and action requires thought. But here’s the catch — the only actions that become springboards to succeeding big are those informed by big thinking to begin with. Make this connection, and the importance of how big you think begins to sink in.