One hour may seem the same as any hour, with 60 minutes up for grabs. But time differs because our productive energy ebbs and flows throughout the day based on our circadian rhythms, caffeine, eating patterns and mental drain.

For productivity consultant Charlie Gilkey, that means it's important to follow a policy of "time blocking," setting aside carefully considered chunks of time for appropriate tasks.

"Our tolerance and desire to work on tasks depends on what kinds of tasks they are, and some tasks can't coherently be worked on in too-small chunks of time," he writes. "We need a good mix of creation, connection, and consumption."

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It's common to look at your calendar, find some random time opening, and tackle a task that can be done in that period. Instead, he suggests considering your time in four categories:

You can probably feel the difference between those four blocks of time and understand what type of tasks fit, when you tend to do them now, and when might be the best time in your calendar to assign those activities.

The idea is to divide a day in advance into these categories – not the specific tasks – and then as the week proceeds choose the appropriate activities.

If it helps, data from Redbooth, a project management software developer, suggests that 11 a.m. is the most productive hour, when 10 per cent of the day's tasks are completed.

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"Productivity declines and fewer tasks are completed as the day's end approaches. By 4 p.m., very little gets done, and the percentage of completed tasks drops precipitously. Mondays are the most productive days, while everyone waits for the weekend on Friday, making it the least productive day of the week," Patrick Lucas Austin reports on Lifehacker.

Mr. Gilkey offers free monthly calendars on his website, colour codes his own time blocks and encourages a one-word descriptor for each day, such as coaching, catch-up or recording. One Wednesday, for coaching, had these eight blocks: Recovery, focus, focus, social, recovery, social, admin, and social.

He offers these tips:

So give his system some consideration if you're struggling with your current arrangement of time. Make more of every hour by deciding how best it can be used.

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Benjamin Franklin's 13 virtues You probably have heard of Benjamin Franklin's 13 virtues. For a large portion of his life, he carried around a card in his pocket with seven columns (for the days of the week) and 13 rows on it for the virtues, trying to keep them front of mind in his actions. Here are those virtues:

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