That was because, as he wrote in his best-selling first book Give And Take (2013), he believed that burnout had less to do with how effective their work was and more to do with how much feedback they were getting on how their work had an impact on others.
The result? Having met those who benefited from the fund in person, the workers spent twice as much time working the phones and, soon, 144 per cent more alumni were donating each week.
Each caller went from pulling in an average of US$412 (S$570) in donations to more than US$2,000 in fresh funds a week.
The 34-year-old now has a new book out, titled Originals, which refers to those who find nifty ways to overcome obstacles for the good of all. Their epitomes include Apple co-founders Steve Jobs and Steve Wozniak and Microsoft founder Bill Gates, but also less obvious models such as British poet T. S. Eliot and PalmPilot pioneer Donna Dubinsky.
Contrary to what most people expect of such groundbreaking folk, his studies on Originals show that they are not risk-takers, like to put off making decisions, can seem inefficient, not prompt and are sometimes over-cautious.
"The most successful originals are not those who leap before they look," Grant says. "They are the ones who reluctantly tiptoe to the edge of a cliff, calculate the rate of descent, triple-check their parachutes and set up a safety net at the bottom just in case."
As an organisational psychologist, or one who studies how you can be more fulfilled at work and contribute effectively to your organisation's success, Grant believes that the best way to boost productivity is to get into the habit of working to benefit others, and thinking broadly and deeply, around the clock.
He practises that faithfully. His wife Allison, a psychiatric nurse, says that he helps others "compulsively", be it a student in need of career advice or a stranger who wants Grant to take a look at his draft thesis.
A former advertising guru, Grant is especially good at helping you see the point of anything by weaving fascinating real-life stories around it and, if you read his two books, you will be getting the same advice as his clients, namely the top guns at Google, JPMorgan Chase and Facebook, among many others.
They seek him out because his ideas are fresh and the perfect antidote to lazy, linear thinking.
The core message of Originals, then, is that everyone can make a difference to the lives of others, by questioning why things are, what might make them better, and then finding out when might be the best time to make them better. It is, as he puts it, about how to avoid becoming "the world's most excellent sheep".
He does this by shifting everyone's focus from behaviour to building character because his studies have shown that doing so leads people to evaluate their options differently. For example, he says people will heed the instruction, "Don't be a drunk driver", which dents their ego, more than "Don't drink and drive".
The thrust of the book is about how to harness psychology effectively, which often means being seemingly counter-intuitive. In doing so, he busts a lot of assumptions and offers insights, such as: • Begin a task quickly, but do not fret about finishing it: That is because Russian psychologist Bluma Zeigarnik found that the brain remembers incomplete tasks better than those which have been completed. So, keeping an idea at the back of your mind helps the brain think through how to improve it, and what the alternatives to it are • Procrastination is a creator's best friend: When you are close to a breakthrough, hold back. This helps the brain relax and, in relaxing, considers all the possibilities instead of its usual "seize and freeze" reaction that can cut off the creative process mid-stream.
As the examples show, geniuses such as Leonardo da Vinci and Google co-founders Larry Page and Sergey Brin dallied before unleashing their powers on the world • Parents are not the best role models for their children: They would do their offspring a favour by introducing them to role models.
For example, Grant says, J.K. Rowling's Harry Potter books help children see that they should not discriminate against those who are different from them, such as her hero Harry and his school chum Hermione, who do not have pure wizard blood like their peers • Win investors by warning them against you: Rufus Griscom, co-founder of parenting website Babble, sold it to Disney for US$40 million, chiefly by "accentuating its flaws", notes Grant.
Griscom told Grant: "When I put up a slide that says, 'Here's why you shouldn't buy this company', the first response is laughter. Then you could see them relax. It's sincere; it doesn't smell, feel or look anything like sales. They're not being sold."
His bottom line: To boost your chances of achieving and sustaining success in life, you should be open to all and seek out varieties of experience. If you, like Grant, revel in "the happiness of pursuit", this book is for you.