People are more likely to buy a product or service if they know other people have already bought it.
How to use it:
Gather testimonials, case studies, shout-outs, and reviews.
Then include those in your emails, website, and social accounts.
Example:

Bharat shah's Word of wisdom
— Investment Books (@InvestmentBook1) December 5, 2020
-Thumb rule to create Value Investing
Image Courtesy : @ms89_meet
How Fund Managers are Making You Rich: Discover Ways to Tame the Bear and Ride the Bull by @lonelycrowd https://t.co/hKirKY0BtC pic.twitter.com/mbh2gm3Iuo
Entrepreneur\u2019s mind.
— James Clear (@JamesClear) August 22, 2020
Athlete\u2019s body.
Artist\u2019s soul.
When you choose who to follow on Twitter, you are choosing your future thoughts.
— James Clear (@JamesClear) October 3, 2020
Working on a problem reduces the fear of it.
— James Clear (@JamesClear) August 30, 2020
It\u2019s hard to fear a problem when you are making progress on it\u2014even if progress is imperfect and slow.
Action relieves anxiety.
We often avoid taking action because we think "I need to learn more," but the best way to learn is often by taking action.
— James Clear (@JamesClear) September 23, 2020