College...

So this is the summer before my senior year. And I'm kind of freaking out. Along with other things, I have no idea what I want to do after high school.. All my childhood I was saying that I wanted to be a nurse. To work with children. But I seriously don't think that's what I want to do anymore. After attending this workshop, I realized that I want to do something that's bigger than me. That what I've been dreaming to do with my life is nothing compared to what God had in store for me. I feel like I'm ping to have to make a choice between philanthropy and a solid financial life as an adult. I just really feel like I'm not ready to be making decisions about a future that I'm unsure of what I even what to do... Any suggestions?