G was born in the town of Tarn Taran, near Amritsar in Punjab, India to Avtar and Arjinder Chahal. In 1985, his parents received a visa for America through a lottery-based system in India, and the following year, when he was four, the family settled in San Jose, California. His parents had arrived with only $25 to their name, and they struggled at menial jobs to make a future for their four children.

For the Chahal family, as for many immigrants, education was paramount, but G left high school at sixteen to form Click Agents, an Internet advertising company, which he sold two years later for $40 million. In January 2004, he launched a second company, BlueLithium - the next generation in Internet advertising. The company was focused on data, optimization, and analytics and became a pioneer of behavioral targeting. BlueLithium was named one of the top 100 private companies in America three years in a row by AlwaysOn, and in 2006, it received highest honor as Top Innovator of the Year. (Previous winners included Google, Skype, and Salesforce.com.) On September 4th, 2007, Yahoo! announced that it was acquiring BlueLithium for $300 million in cash.

G is living proof that no matter how humble one's beginnings, there is truly no limit to what an individual can achieve.

After he completed his role at Yahoo, G signed up with the William Morris Agency.

G starred on FOX's prime-time network show The Secret Millionaire. He has appeared on The Oprah Winfrey Show, Bonnie Hunt, EXTRA, Neil Cavuto, among others, and has been profiled in such publications as The New York Times, Entrepreneur magazine, and The San Francisco Chronicle. He completed his memoir, "The Dream" which globally released Q4 2008. On January 8, 2009, he was featured on Extra TV as America's Most Eligible Bachelor. In mid 2009, Chahal started his third Company, gWallet, a virtual currency platform for social media.