How this entrepreneur created a $4 million marketing agency before the age of 30

At the age of 27, Sabri Suby had already run a number of businesses — some to eventual sales, and some into the ground.

Despite these mixed results, about five years ago he decided it was time to have another crack. Armed with a $50 VOIP account and an old laptop, the serial entrepreneur hit the phones, and King Kong was born.

“I was probably making around 150 cold calls a day, just calling any business that wasn’t on page one of Google to try and get them on board, offering them SEO work,” Suby tells SmartCompany.

Four days later, the marketing agency landed its first client.