Wahlberg is an incredibly savvy entrepreneur and investor. CNBC notes he co-owns his family's successful fast food chain Wahlburgers, as well as bottled water brand AQUAhydrate, with Sean "Diddy" Combs. There's also Performance Inspired Nutrition, a health and supplements company for fellow gym rats, and Wahlberg holds a minority stake in Australian gym franchise F45 Training. In 2017, he signed a $10 million deal with AT&T to be their spokesman, as reported by Page Six at the time. It would actually be easier to list the businesses Wahlberg hasn't got a stake in these days.

The high school dropout told CNBC if he could give his younger self any advice, it would be to stay in school and study business. Otherwise, the secret to his success is to simply plan. "Having a long-term plan and strategy is the most important thing you can do," the actor advised.