SKU: 25778256588

The One-Idea Rule: An Efficient Way to Improve Your Writing at School and Work

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The One-Idea Rule: An Efficient Way to Improve Your Writing at School and WorkFocused on a simple principle and designed to bolster writers' confidence and skills, writing coach at Harvard Business School Mark Rennella offers practical advice for students and budding writers with the goal of leveling the playing field between beginners and those with more experience. After a 30 year career as a writer, instructor, and editor, Mark Rennella has crafted a battle tested method to help students and young professionals who want to

Focused on a simple principle and designed to bolster writers' confidence and skills, writing coach at Harvard Business School Mark Rennella offers practical advice for students and budding writers--with the goal of leveling the playing field between beginners and those with more experience.

After a 30-year career as a writer, instructor, and editor, Mark Rennella has crafted a battle-tested method to help students and young professionals who want to improve their writing: the One-Idea Rule, anchored on the assertion that every component of a successful piece of writing should express only one idea.

With The One-Idea Rule, writers embarking on their adult lives and professional journeys will have a reliable methodology they can easily remember and count on for all of their writing tasks, as well as increased confidence about the cogency of their writing and its potential for impact in the public sphere.

Most advice about writing looks like a long laundry list of dos and don'ts. For those already accomplished as writers, these lists can be a helpful addition to an already-developed communication style. But for teens starting college and young professionals entering the workforce, it can be challenging to wield such complex advice to tackle increasingly demanding writing assignments.

The One-Idea Rule is a writing primer aligned and empathetic with any young writer's needs.
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SKU: 25778256588

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4.8 ★★★★★
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Dave S
West Palm Beach, US
★★★★★ 3
Breathability - meh
Size: Medium, Color: Navy Blue Circle
Not terribly breathable
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Reviewed in the United States on February 27, 2026
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Keri L.
Belleville, US
★★★★★ 5
Wow.
Size: Medium, Color: White/Black Flower
Wow. What a nice shirt. Bought it fo my son after seeing almost the identical one in Men’s Warehouse for $65 dollars. I was going to get it when I saw it in the store, but I didn’t want to wait on the line. Then I saw it on Amazon. Beautiful shirt and fit. And I have a beautiful son.
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Reviewed in the United States on January 10, 2025
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paula nelson
Battle Creek, US
★★★★★ 5
Great price
Size: Large, Color: Navy Blue Circle
Nice shirt. Well made. Like extra material inside shirt. Looked nice on. Would purchase again.
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Reviewed in the United States on January 10, 2025
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Shannon S
Los Angeles, US
★★★★★ 1
Rhymes with schmosticka
Size: Large, Color: White/Black Flower, Size: Large, Color: White/Black Flower
Hey, so I need to return this shirt I ordered for my son's upcoming prom. When I took another look at the pattern, it seems it might be more appropriate for a White Nationalist formal, not the event my son will be attending. Rhymes with schmosticka. Yikes.
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Reviewed in the United States on April 24, 2026
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Amazon customer
Boise, US
★★★★★ 5
Low maintenance
Size: Large, Color: White/Black Flower
Washes and dries wrinkle free which is perfect for my son away at college when he has to get dressed up and look nice.
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Reviewed in the United States on September 20, 2025

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