As a careers counsellor for many years, I regularly meet adults in their late 20's and early 30's who felt forced into the career that their parents wanted for them. Often they have been successful in the sense that they have had good steady jobs (eg. law, teaching, medical, business, IT), gained promotions and earned good money. Sadly however, they have become unhappy and unfulfilled.
I also regularly meet adults who have studied and trained in arts, design, media, performance etc, having followed their hearts, who feel equally unfulfilled, usually because they have struggled to make it.
In my experience, no matter where you start out, it is crucial to be open to opportunities, grab every opportunity to learn and grow, be prepared to work hard to achieve your goals, and understand the importance of reaching out to create a network.
Successful people ( remembering that success means different thing to different people) are all of the above, plus they accept that they will have the chance to change over their lifetime. What you choose to study in college will not necessarily define your whole career, over 50 years of working life.
I'm 57, and right now I have 3 jobs- my careers counselling business, a part time job teaching adults, and another part time job working in a kitchen that trains people with disabilities. I love it all!