Whenever I hear about young people asking for advice, it invariably turns into a conversation about regret, etc... And, in hindsight, yes, I wish there were LOTS of things I knew when I was 25. However, I wouldn't have learned any of those things unless I went through the process. At nearly 40 y.o. and back in school, I shoulda, coulda, woulda many times over. But, I also have, done, and did lots of things that I also regretted or turned out to be disappointments. I followed my childhood dreams, in fact, and that turned out to be a nightmare. I also saw this happen to a few friends who pined to work in the video game industry since their youth only to be so severely burnt out several years later to vow off programming forever.
So, all I can at this point it, you won't know what you want to know until you go through those experiences. And, stop listening to everyone else. We're all different and have different values and beliefs. What works for me probably won't work for you. I can say follow your passion, and that may just completely backfire like it did me. I can say save all of your money and be frugal, look at what's happening to most Americans! But, you could end up with cancer and die in your 30's without having truly lived. I guess what I'm saying is, 15 years from now, when you look back at your life, and you think, "Man, I shoulda, coulda, woulda..." Realize, your decisions are half chanced. Just like everybody else's...