Questions regarding whether we're on the "right" career path can strike fear into even the most confident heart. However, as some of the most successful individuals prove, you don't have to have it all figured out from the beginning.

A good number of successful people chose to make major career shifts, some even many years into their adulthood. Below are 12 very successful people who prove it's never too late to change paths.

1. Jeff Bezos

12 Very Successful People Who Changed Careers After Their 30th Birthday

Jeff Bezos

The chief executive officer of Amazon, had a profitable career in computer science on Wall Street and got top roles at various financial companies before transitioning to the world of e-commerce and launching Amazon at the age of 31.

2. Dwayne "The Rock" Johnson

12 Very Successful People Who Changed Careers After Their 30th Birthday

Dwayne "The Rock" Johnson

The Rock changed careers not once, but twice. Before he was "the most electrifying guy in sports entertainment," he was a backup linebacker for the Canadian Football League's Calgary Stampeders.

Johnson ditched the football career and transitioned to the World Wrestling Federation (WWF) in 1996 at the age of 24, which catapulted him to stardom and enabled him to cross over to TV and films in the early 2000s.

3. Sara Blakely

12 Very Successful People Who Changed Careers After Their 30th Birthday

Sara Blakely

The billionaire Spanx founder sold office supplies door-to-door for 7 years in her 20s before her line of slimming footless pantyhose propelled to success in 2000. Blakely quit her sales job at 30 to run her company full-time.

4. Ronald Reagan

12 Very Successful People Who Changed Careers After Their 30th Birthday

Ronald Reagan

Reagan was a young, up-and-coming Hollywood actor in movie and TV long before he became the 40th president of the United States at the age of 69.

5. Vera Wang

12 Very Successful People Who Changed Careers After Their 30th Birthday

Vera Wang

Wang was a journalist and figure skater before entering the fashion industry at 40. Today she's one of the world's topmost women's designers.

6. Arnold Schwarzenegger

12 Very Successful People Who Changed Careers After Their 30th Birthday

Arnold Schwarzenegger

He made 2 significant career changes, first when he moved from world champion bodybuilder in his 20s to award-winning film actor in his 30s, then Schwarzenegger became the Governor of California in 2003 at the age of 56.

7. Colonel Sanders

12 Very Successful People Who Changed Careers After Their 30th Birthday

Colonel Sanders

In 1952, Harland Sanders franchised Kentucky Fried Chicken, at the age of 62. He sold it for $2 million 12 years afterward. Before his KFC, Sanders held several odd jobs including gas station operator, railroad worker, and country lawyer.

8. Julia Child

12 Very Successful People Who Changed Careers After Their 30th Birthday

Julia Child

Child served in secret intelligence, media and advertising before composing her 1st cookbook at the age of 50, starting her career as a celebrity chef in 1961.

9. Jonah Peretti

12 Very Successful People Who Changed Careers After Their 30th Birthday

Jonah Peretti

Before launching popular news media sites The Huffington Post and Buzzfeed in his 30s, Peretti was a computer science teacher, teaching middle-schoolers how to use Microsoft Office.

10. Ray Kroc

12 Very Successful People Who Changed Careers After Their 30th Birthday

Ray Kroc

Kroc was a milkshake-device salesman before purchasing McDonald's in 1954 at the age of 52. He grew it into the world's biggest fast-food franchise.

11. Anna Mary Robertson Moses

12 Very Successful People Who Changed Careers After Their 30th Birthday

Anna Mary Robertson Moses

Grandma Moses started her prolific painting career when she was 78. In 2006, one of her paintings was bought for $1.2 million. Previously, Grandma Moses was a farm laborer and housekeeper.

12. Taikichiro Mori

12 Very Successful People Who Changed Careers After Their 30th Birthday

Taikichiro Mori

He was an academic but turn a real-estate investor at age 51, when he founded Mori Building Company. Mori brilliant investments made him the world's richest man in 1992 when he had a net worth of $13 billion.