Phone: 609-683-8100

Mary Cullen

Mary founded Instructional Solutions in 1998, and is an internationally recognized business writing trainer and executive writing coach with two decades of experience helping thousands of individuals and businesses master the strategic skill of business writing. She excels at designing customized business writing training programs to maximize productivity, advance business objectives, and convey complex information. She holds a B.A in English from the University of Rhode Island, a M.A in English Literature from Boston College, and a C.A.G.S. in Composition and Rhetoric from the University of New Hampshire.



Author's Posts

Professional Tone in Business Writing [A Guide for 2018]

by Mary Cullen on Wed, Mar 14, 2018

tone in writing

“But, does it have the right tone?”

You’ve likely asked yourself this question, if not your colleagues or friends. And it’s not an easy one. Business writing is challenging not only to communicate the intention, but to communicate it in the right way.

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6 Advanced Grammar Mistakes

by Mary Cullen on Sat, Mar 3, 2018

March 4th is Grammar Day and we are celebrating with a new infographic with six advanced grammar mistakes. Each year Grammar Day presents the opportunity to review tricky grammar mistakes that can cause trouble for even the most advanced writers.

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Topics: Grammar and Usage

How to Write a White Paper: The Definitive Guide (2018)

by Mary Cullen on Wed, Feb 7, 2018

You’re ready to compile and share your company’s deep knowledge of your industry. A white paper seems like the perfect format. It’s a useful product to highlight your company’s expertise and a valuable tool in marketing.

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How to Write a Winning Business Proposal [Ultimate Guide for 2018]

by Mary Cullen on Wed, Dec 20, 2017



A strong business proposal is a top opportunity to win new business. It is the ultimate sales document, a condensed version of all the value your solution brings to a client’s problem.

Yet, not every proposal puts your business’s best foot forward. There are a lot of aspects to consider. From the audience to the content to the formatting, each part of a winning business proposal requires thoughtful planning and development.

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Holiday Out-of-Office Email Tips [3 Copy and Paste Examples]

by Mary Cullen on Tue, Dec 19, 2017

‘Tis the season for out-of-office emails!

Yes, with all the holiday planning of feasts and gifts and decorations, there is also the important task of drafting your holiday auto-responder text. You need to let your colleagues and clients know that you’ll be away from your desk celebrating the spirit of the season (and not reading their emails!).

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10 Best Proposal Examples [With Critical Critiques]

by Mary Cullen on Wed, Dec 13, 2017

Earning more business starts most often with an effective proposal. Preparing a winning proposal means writing for the client and providing a clear, valuable solution to their problem.

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Topics: Business Writing Proposals

How to Use Singular They

by Mary Cullen on Tue, Nov 21, 2017

"The employee believed their safety could not be guaranteed."

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Topics: Business Grammar

How to Write a Business Email (Updated for 2017)

by Mary Cullen on Mon, Nov 20, 2017

Business emails are a pillar of modern communication. On any given day, the average office worker receives over 80 emails.

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61 Free Business Writing Stock Images 

by Mary Cullen on Fri, Nov 10, 2017

It can be difficult to find business themed stock images that are not cheesy.

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87 Advanced Business Writing Tips [That Actually Work]

by Mary Cullen on Mon, Oct 9, 2017

I'm excited to share these top 87 business writing tips with you.

They were honed while I studied English Literature and Rhetoric, taught writing at the university level, and worked with thousands of individuals and hundreds of companies to help people write better at work. Many of these tips come directly from our award winning online business writing courses

My hope is these tips help you enjoy writing, better communicate at work, get ahead in your career, and grow your business!

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Topics: Business Writing Skills