My hands are tied

Lately It seems that I am very overwhelmed with decisions. Mainly just the decision of deciding what I want to do with my life. I really know what my passion is right now, just taking 1 more year off to travel the world. But at the same time, I have alot of pressure to start school. I really dont think I am ready to lay down thousands of dollars to study a career that I am so unsure about. I am completly frazzled when it comes to deciding what I want to study. I have an interest in rehabilitation with alcohol and drugs, Travel, Music and psychology. If anyone knows a job that puts that all together please do inform me. I guess at some point in time, I will have to separate my passions from my priorities. I have decided to take another year off, not so much support from parents about not going back to school, but they are very happy that I am taking time to travel and see the world. There are so many places I still have to see, and I feel like I am running out of time. I know I am only 18, but soon to be 19 and I start freaking out every now and then because I have so many things I want to accomplish in my little time here. I really do want to have a great career, a family of my own and all those fun things everyone does, but at the same time, I have this huge desire to see so much more. Is it selfish? I am stuck with the decision of deciding where I want to go next year and at what time in the season do I go. I am returning home in a few short weeks, plan on finding a full time job and working my little bum off in order to make loads of cash. I have contemplated many options, the most popular one in my mind is working till the middle of September and heading off to Au pair in Sydney. I plan on staying there for about a year if I go to Australia as an au pair. It would be alot easier for me there than Italy, because I can get a second job, maybe a night job at a restaurant, earn a little more. Also, the benefit of having good friends that live there, that are more than excited for me to move there. Then there is the option of coming back to Italy, and au pairing in Rome. I have fallen completely head over heels in love for this city. I cant explain how much I love being in this city, I just feel so happy and at home. But then the factor that I have already been to Italy, and this would be my third time to Europe. There is also the option of working until December and taking 3 months in either continent Aus land or Europe and just travel from city to city. I met so many people on my last trip just travelling alone. I dont think I would be able to do it on my own, but I had a blast doing it with Brook for 11 days. You meet so many new people and I absoluetly love that feeling. As you can see my hands are tied and I have no idea what to do. I guess I should really just do what makes myself happy and what I really want to do. Because this is my life, and I know I have expectations to fill but I need to put myself first. Something that I have been working on lately.