Here is what worked for me. I started a programming career as a university dropout, got bored of it after 15 years and started a successful freelance consulting practice, got tired of that after a while and recently redesigned my job from the ground up for more stable income and even more freedom of action than I had as a consultant.

Advice #1 is: learn how to network. Start doing it now even if you think you're "too young".

Send email to people - strangers - you think of as exemplars of the kind of success you aspire to, and ask them for one hour of their time, to give you some insight into where your own career might go, and possibly refer you to someone who could help further your goals.

Keep a Farley file, or maybe use LinkedIn to keep your contacts organized, but at any rate start thinking of these contacts as "your network" and of your network as one of your major assets in building the kind of career you want. Cultivate people in your network for their own sake, not as people who can help you. If at all possible, think first of how you can help them.

After a while - and one thing to remember is to be patient, it could take up to a couple years - your network will start generating opportunities for you. At that point, know what you want. You won't be able to say "yes" to everything, but it's crucial that you're able to say "yes" to something. You will have to take risks.