The short-answer is, you can't go wrong....really. Your 20s, and really your 30s are pretty much about self-discovery. Many college students have angst around a career choice that they think will be final, and it has to be based on their major. In reality, the bulk of our careers seems non-linear as we take many different jobs in different functions, industries, and locations. On the relationship to a major, only ~1/4 of college grads even get a job related to their major. (https://www.washingtonpost.com/news/wonk/wp/2013/05/20/only-27-percent-of-college-grads-have-a-job-related-to-their-major/?noredirect=on)
A great quote from a poem, that I loved when I saw it re-purposed for Careers, is : "Caminante, no hay camino, se hace camino al andar." It means, traveler, there is no path. Paths are made from walking.
The truth is, there are some linear or established paths. Accounting, Engineering, Nursing, Law. You can pursue a path and become an expert. Very few of us go that deep. You'll try some stuff, just learn from it. The only mistake you can make it is repeating a previous one. i.e. You don't like your job at a law firm, but it paid well. You took another job you liked a bit more, but paid less. You then got offered another job at a different law firm that paid well, and you didn't like it again. In that scenario, that's what I'd call making the same mistake twice.